diff --git a/.gitignore b/.gitignore
index 8f718aea18f8228889f4966d3e05d98422a63c57..5a12c9f6778a0f6d3d7e41243a29ccdc903a43d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -166,7 +166,7 @@ Desktop.ini
 .tags
 .tags_sorted_by_file
 
-Code/Mantid/Vates/VatesSimpleGui/ViewWidgets/inc/MantidVatesSimpleGuiViewWidgets/LibHelper.h
+Vates/VatesSimpleGui/ViewWidgets/inc/MantidVatesSimpleGuiViewWidgets/LibHelper.h
 
 
 # Make sure Third_Party doesn't get checked into the main repository
diff --git a/Framework/API/inc/MantidAPI/IFunction1D.h b/Framework/API/inc/MantidAPI/IFunction1D.h
index 61f9ea1d1b7bc85ad7f934af6978782dfa420740..f40d2b454d6d8e75e3f252fc11caffee8d9a4249 100644
--- a/Framework/API/inc/MantidAPI/IFunction1D.h
+++ b/Framework/API/inc/MantidAPI/IFunction1D.h
@@ -12,9 +12,10 @@
 namespace Mantid {
 
 namespace CurveFitting {
+namespace Algorithms {
 class Fit;
 }
-
+}
 namespace API {
 
 //----------------------------------------------------------------------
@@ -88,7 +89,7 @@ protected:
   static Kernel::Logger g_log;
 
   /// Making a friend
-  friend class CurveFitting::Fit;
+  friend class CurveFitting::Algorithms::Fit;
 };
 
 typedef boost::shared_ptr<IFunction1D> IFunction1D_sptr;
diff --git a/Framework/CurveFitting/CMakeLists.txt b/Framework/CurveFitting/CMakeLists.txt
index c7be58f1e72176eed23025ebda88c4a7e00aec8a..dfbff31c86c754d00670840aa2275393a8de0276 100644
--- a/Framework/CurveFitting/CMakeLists.txt
+++ b/Framework/CurveFitting/CMakeLists.txt
@@ -3,118 +3,119 @@ set ( SRC_FILES
 	#	src/SCDPanelErrors.cpp
 	# src/ChebyshevPolynomialBackground.cpp
 	#src/RefinePowderInstrumentParameters.cpp
-	src/Abragam.cpp
+	src/Algorithms/CalculateChiSquared.cpp
+	src/Algorithms/CalculateGammaBackground.cpp
+	src/Algorithms/CalculateMSVesuvio.cpp
+	src/Algorithms/ConvertToYSpace.cpp
+	src/Algorithms/ConvolveWorkspaces.cpp
+	src/Algorithms/EstimatePeakErrors.cpp
+	src/Algorithms/EvaluateFunction.cpp
+	src/Algorithms/Fit.cpp
+	src/Algorithms/Fit1D.cpp
+	src/Algorithms/FitPowderDiffPeaks.cpp
+	src/Algorithms/LeBailFit.cpp
+	src/Algorithms/LeBailFunction.cpp
+	src/Algorithms/NormaliseByPeakArea.cpp
+	src/Algorithms/PawleyFit.cpp
+	src/Algorithms/PlotPeakByLogValue.cpp
+	src/Algorithms/RefinePowderInstrumentParameters.cpp
+	src/Algorithms/RefinePowderInstrumentParameters3.cpp
+	src/Algorithms/SplineBackground.cpp
+	src/Algorithms/SplineInterpolation.cpp
+	src/Algorithms/SplineSmoothing.cpp
 	src/AugmentedLagrangianOptimizer.cpp
-	src/BFGS_Minimizer.cpp
-	src/BSpline.cpp
-	src/BackToBackExponential.cpp
-	src/BackgroundFunction.cpp
-	src/BivariateNormal.cpp
-	src/Bk2BkExpConvPV.cpp
-	src/BoundaryConstraint.cpp
-	src/CalculateChiSquared.cpp
-	src/CalculateGammaBackground.cpp
-	src/CalculateMSVesuvio.cpp
-	src/ChebfunBase.cpp
-	src/Chebyshev.cpp
-	src/ComptonPeakProfile.cpp
-	src/ComptonProfile.cpp
-	src/ComptonScatteringCountRate.cpp
-	src/ConvertToYSpace.cpp
-	src/Convolution.cpp
-	src/ConvolveWorkspaces.cpp
-	src/CostFuncFitting.cpp
-	src/CostFuncLeastSquares.cpp
-	src/CostFuncRwp.cpp
-	src/CostFuncUnweightedLeastSquares.cpp
-	src/CubicSpline.cpp
-	src/DampingMinimizer.cpp
-	src/DeltaFunction.cpp
-	src/DerivMinimizer.cpp
-	src/DiffRotDiscreteCircle.cpp
-	src/DiffSphere.cpp
-	src/DynamicKuboToyabe.cpp
-	src/EndErfc.cpp
-	src/EstimatePeakErrors.cpp
-	src/EvaluateFunction.cpp
-	src/ExpDecay.cpp
-	src/ExpDecayMuon.cpp
-	src/ExpDecayOsc.cpp
-	src/FABADAMinimizer.cpp
-	src/FRConjugateGradientMinimizer.cpp
-	src/Fit.cpp
-	src/Fit1D.cpp
+	src/Constraints/BoundaryConstraint.cpp
+	src/CostFunctions/CostFuncFitting.cpp
+	src/CostFunctions/CostFuncLeastSquares.cpp
+	src/CostFunctions/CostFuncRwp.cpp
+	src/CostFunctions/CostFuncUnweightedLeastSquares.cpp
 	src/FitMW.cpp
-	src/FitPowderDiffPeaks.cpp
-	src/FlatBackground.cpp
-	src/FullprofPolynomial.cpp
+	src/FuncMinimizers/BFGS_Minimizer.cpp
+	src/FuncMinimizers/DampingMinimizer.cpp
+	src/FuncMinimizers/DerivMinimizer.cpp
+	src/FuncMinimizers/FABADAMinimizer.cpp
+	src/FuncMinimizers/FRConjugateGradientMinimizer.cpp
+	src/FuncMinimizers/LevenbergMarquardtMDMinimizer.cpp
+	src/FuncMinimizers/LevenbergMarquardtMinimizer.cpp
+	src/FuncMinimizers/PRConjugateGradientMinimizer.cpp
+	src/FuncMinimizers/SimplexMinimizer.cpp
+	src/FuncMinimizers/SteepestDescentMinimizer.cpp
 	src/FunctionDomain1DSpectrumCreator.cpp
+	src/Functions/Abragam.cpp
+	src/Functions/BSpline.cpp
+	src/Functions/BackToBackExponential.cpp
+	src/Functions/BackgroundFunction.cpp
+	src/Functions/BivariateNormal.cpp
+	src/Functions/Bk2BkExpConvPV.cpp
+	src/Functions/ChebfunBase.cpp
+	src/Functions/Chebyshev.cpp
+	src/Functions/ComptonPeakProfile.cpp
+	src/Functions/ComptonProfile.cpp
+	src/Functions/ComptonScatteringCountRate.cpp
+	src/Functions/Convolution.cpp
+	src/Functions/CubicSpline.cpp
+	src/Functions/DeltaFunction.cpp
+	src/Functions/DiffRotDiscreteCircle.cpp
+	src/Functions/DiffSphere.cpp
+	src/Functions/DynamicKuboToyabe.cpp
+	src/Functions/EndErfc.cpp
+	src/Functions/ExpDecay.cpp
+	src/Functions/ExpDecayMuon.cpp
+	src/Functions/ExpDecayOsc.cpp
+	src/Functions/FlatBackground.cpp
+	src/Functions/FullprofPolynomial.cpp
+	src/Functions/GausDecay.cpp
+	src/Functions/GausOsc.cpp
+	src/Functions/Gaussian.cpp
+	src/Functions/GaussianComptonProfile.cpp
+	src/Functions/GramCharlierComptonProfile.cpp
+	src/Functions/IkedaCarpenterPV.cpp
+	src/Functions/LinearBackground.cpp
+	src/Functions/LogNormal.cpp
+	src/Functions/Lorentzian.cpp
+	src/Functions/Lorentzian1D.cpp
+	src/Functions/MuonFInteraction.cpp
+	src/Functions/NeutronBk2BkExpConvPVoigt.cpp
+	src/Functions/PawleyFunction.cpp
+	src/Functions/PeakParameterFunction.cpp
+	src/Functions/Polynomial.cpp
+	src/Functions/ProcessBackground.cpp
+	src/Functions/ProductFunction.cpp
+	src/Functions/ProductLinearExp.cpp
+	src/Functions/ProductQuadraticExp.cpp
+	src/Functions/PseudoVoigt.cpp
+	src/Functions/Quadratic.cpp
+	src/Functions/ReflectivityMulf.cpp
+	src/Functions/Resolution.cpp
+	src/Functions/SimpleChebfun.cpp
+	src/Functions/StaticKuboToyabe.cpp
+	src/Functions/StaticKuboToyabeTimesExpDecay.cpp
+	src/Functions/StaticKuboToyabeTimesGausDecay.cpp
+	src/Functions/StretchExp.cpp
+	src/Functions/StretchExpMuon.cpp
+	src/Functions/TabulatedFunction.cpp
+	src/Functions/ThermalNeutronBk2BkExpAlpha.cpp
+	src/Functions/ThermalNeutronBk2BkExpBeta.cpp
+	src/Functions/ThermalNeutronBk2BkExpConvPVoigt.cpp
+	src/Functions/ThermalNeutronBk2BkExpSigma.cpp
+	src/Functions/ThermalNeutronDtoTOFFunction.cpp
+	src/Functions/UserFunction.cpp
+	src/Functions/UserFunction1D.cpp
+	src/Functions/VesuvioResolution.cpp
+	src/Functions/Voigt.cpp
 	src/GSLFunctions.cpp
 	src/GSLMatrix.cpp
 	src/GSLVector.cpp
-	src/GausDecay.cpp
-	src/GausOsc.cpp
-	src/Gaussian.cpp
-	src/GaussianComptonProfile.cpp
-	src/GramCharlierComptonProfile.cpp
 	src/IFittingAlgorithm.cpp
-	src/IkedaCarpenterPV.cpp
 	src/LatticeDomainCreator.cpp
 	src/LatticeFunction.cpp
-	src/LeBailFit.cpp
-	src/LeBailFunction.cpp
-	src/LevenbergMarquardtMDMinimizer.cpp
-	src/LevenbergMarquardtMinimizer.cpp
-	src/LinearBackground.cpp
-	src/LogNormal.cpp
-	src/Lorentzian.cpp
-	src/Lorentzian1D.cpp
 	src/MSVesuvioHelpers.cpp
 	src/MultiDomainCreator.cpp
-	src/MuonFInteraction.cpp
-	src/NeutronBk2BkExpConvPVoigt.cpp
-	src/NormaliseByPeakArea.cpp
-	src/PRConjugateGradientMinimizer.cpp
 	src/ParDomain.cpp
 	src/ParameterEstimator.cpp
-	src/PawleyFit.cpp
-	src/PawleyFunction.cpp
-	src/PeakParameterFunction.cpp
-	src/PlotPeakByLogValue.cpp
-	src/Polynomial.cpp
-	src/ProcessBackground.cpp
-	src/ProductFunction.cpp
-	src/ProductLinearExp.cpp
-	src/ProductQuadraticExp.cpp
-	src/PseudoVoigt.cpp
-	src/Quadratic.cpp
-	src/RefinePowderInstrumentParameters3.cpp
-	src/ReflectivityMulf.cpp
-	src/Resolution.cpp
 	src/SeqDomain.cpp
 	src/SeqDomainSpectrumCreator.cpp
-	src/SimpleChebfun.cpp
-	src/SimplexMinimizer.cpp
 	src/SpecialFunctionHelper.cpp
-	src/SplineBackground.cpp
-	src/SplineInterpolation.cpp
-	src/SplineSmoothing.cpp
-	src/StaticKuboToyabe.cpp
-	src/StaticKuboToyabeTimesExpDecay.cpp
-	src/StaticKuboToyabeTimesGausDecay.cpp
-	src/SteepestDescentMinimizer.cpp
-	src/StretchExp.cpp
-	src/StretchExpMuon.cpp
-	src/TabulatedFunction.cpp
-	src/ThermalNeutronBk2BkExpAlpha.cpp
-	src/ThermalNeutronBk2BkExpBeta.cpp
-	src/ThermalNeutronBk2BkExpConvPVoigt.cpp
-	src/ThermalNeutronBk2BkExpSigma.cpp
-	src/ThermalNeutronDtoTOFFunction.cpp
-	src/UserFunction.cpp
-	src/UserFunction1D.cpp
-	src/VesuvioResolution.cpp
-	src/Voigt.cpp
 )
 
 set ( SRC_UNITY_IGNORE_FILES src/Fit1D.cpp src/GSLFunctions.cpp )
@@ -124,235 +125,237 @@ set ( INC_FILES
 	#	inc/MantidCurveFitting/SCDPanelErrors.h
 	# inc/MantidCurveFitting/ChebyshevPolynomialBackground.h
 	#inc/MantidCurveFitting/RefinePowderInstrumentParameters.h
-	inc/MantidCurveFitting/Abragam.h
+	inc/MantidCurveFitting/Algorithms/CalculateChiSquared.h
+	inc/MantidCurveFitting/Algorithms/CalculateGammaBackground.h
+	inc/MantidCurveFitting/Algorithms/CalculateMSVesuvio.h
+	inc/MantidCurveFitting/Algorithms/ConvertToYSpace.h
+	inc/MantidCurveFitting/Algorithms/ConvolveWorkspaces.h
+	inc/MantidCurveFitting/Algorithms/EstimatePeakErrors.h
+	inc/MantidCurveFitting/Algorithms/EvaluateFunction.h
+	inc/MantidCurveFitting/Algorithms/Fit.h
+	inc/MantidCurveFitting/Algorithms/Fit1D.h
+	inc/MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h
+	inc/MantidCurveFitting/Algorithms/LeBailFit.h
+	inc/MantidCurveFitting/Algorithms/LeBailFunction.h
+	inc/MantidCurveFitting/Algorithms/NormaliseByPeakArea.h
+	inc/MantidCurveFitting/Algorithms/PawleyFit.h
+	inc/MantidCurveFitting/Algorithms/PlotPeakByLogValue.h
+	inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h
+	inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h
+	inc/MantidCurveFitting/Algorithms/SplineBackground.h
+	inc/MantidCurveFitting/Algorithms/SplineInterpolation.h
+	inc/MantidCurveFitting/Algorithms/SplineSmoothing.h
 	inc/MantidCurveFitting/AugmentedLagrangianOptimizer.h
-	inc/MantidCurveFitting/BFGS_Minimizer.h
-	inc/MantidCurveFitting/BSpline.h
-	inc/MantidCurveFitting/BackToBackExponential.h
-	inc/MantidCurveFitting/BackgroundFunction.h
-	inc/MantidCurveFitting/BivariateNormal.h
-	inc/MantidCurveFitting/Bk2BkExpConvPV.h
-	inc/MantidCurveFitting/BoundaryConstraint.h
-	inc/MantidCurveFitting/CalculateChiSquared.h
-	inc/MantidCurveFitting/CalculateGammaBackground.h
-	inc/MantidCurveFitting/CalculateMSVesuvio.h
-	inc/MantidCurveFitting/ChebfunBase.h
-	inc/MantidCurveFitting/Chebyshev.h
-	inc/MantidCurveFitting/ComptonPeakProfile.h
-	inc/MantidCurveFitting/ComptonProfile.h
-	inc/MantidCurveFitting/ComptonScatteringCountRate.h
-	inc/MantidCurveFitting/ConvertToYSpace.h
-	inc/MantidCurveFitting/Convolution.h
-	inc/MantidCurveFitting/ConvolveWorkspaces.h
-	inc/MantidCurveFitting/CostFuncFitting.h
-	inc/MantidCurveFitting/CostFuncLeastSquares.h
-	inc/MantidCurveFitting/CostFuncRwp.h
-	inc/MantidCurveFitting/CostFuncUnweightedLeastSquares.h
-	inc/MantidCurveFitting/CubicSpline.h
-	inc/MantidCurveFitting/DampingMinimizer.h
-	inc/MantidCurveFitting/DeltaFunction.h
-	inc/MantidCurveFitting/DerivMinimizer.h
-	inc/MantidCurveFitting/DiffRotDiscreteCircle.h
-	inc/MantidCurveFitting/DiffSphere.h
+	inc/MantidCurveFitting/Constraints/BoundaryConstraint.h
+	inc/MantidCurveFitting/CostFunctions/CostFuncFitting.h
+	inc/MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h
+	inc/MantidCurveFitting/CostFunctions/CostFuncRwp.h
+	inc/MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h
 	inc/MantidCurveFitting/DllConfig.h
-	inc/MantidCurveFitting/DynamicKuboToyabe.h
-	inc/MantidCurveFitting/EndErfc.h
-	inc/MantidCurveFitting/EstimatePeakErrors.h
-	inc/MantidCurveFitting/EvaluateFunction.h
-	inc/MantidCurveFitting/ExpDecay.h
-	inc/MantidCurveFitting/ExpDecayMuon.h
-	inc/MantidCurveFitting/ExpDecayOsc.h
-	inc/MantidCurveFitting/FABADAMinimizer.h
-	inc/MantidCurveFitting/FRConjugateGradientMinimizer.h
-	inc/MantidCurveFitting/Fit.h
-	inc/MantidCurveFitting/Fit1D.h
 	inc/MantidCurveFitting/FitMW.h
-	inc/MantidCurveFitting/FitPowderDiffPeaks.h
-	inc/MantidCurveFitting/FlatBackground.h
-	inc/MantidCurveFitting/FullprofPolynomial.h
+	inc/MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/DampingMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/DerivMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h
+	inc/MantidCurveFitting/FuncMinimizers/SteepestDescentMinimizer.h
 	inc/MantidCurveFitting/FunctionDomain1DSpectrumCreator.h
+	inc/MantidCurveFitting/Functions/Abragam.h
+	inc/MantidCurveFitting/Functions/BSpline.h
+	inc/MantidCurveFitting/Functions/BackToBackExponential.h
+	inc/MantidCurveFitting/Functions/BackgroundFunction.h
+	inc/MantidCurveFitting/Functions/BivariateNormal.h
+	inc/MantidCurveFitting/Functions/Bk2BkExpConvPV.h
+	inc/MantidCurveFitting/Functions/ChebfunBase.h
+	inc/MantidCurveFitting/Functions/Chebyshev.h
+	inc/MantidCurveFitting/Functions/ComptonPeakProfile.h
+	inc/MantidCurveFitting/Functions/ComptonProfile.h
+	inc/MantidCurveFitting/Functions/ComptonScatteringCountRate.h
+	inc/MantidCurveFitting/Functions/Convolution.h
+	inc/MantidCurveFitting/Functions/CubicSpline.h
+	inc/MantidCurveFitting/Functions/DeltaFunction.h
+	inc/MantidCurveFitting/Functions/DiffRotDiscreteCircle.h
+	inc/MantidCurveFitting/Functions/DiffSphere.h
+	inc/MantidCurveFitting/Functions/DynamicKuboToyabe.h
+	inc/MantidCurveFitting/Functions/EndErfc.h
+	inc/MantidCurveFitting/Functions/ExpDecay.h
+	inc/MantidCurveFitting/Functions/ExpDecayMuon.h
+	inc/MantidCurveFitting/Functions/ExpDecayOsc.h
+	inc/MantidCurveFitting/Functions/FlatBackground.h
+	inc/MantidCurveFitting/Functions/FullprofPolynomial.h
+	inc/MantidCurveFitting/Functions/GausDecay.h
+	inc/MantidCurveFitting/Functions/GausOsc.h
+	inc/MantidCurveFitting/Functions/Gaussian.h
+	inc/MantidCurveFitting/Functions/GaussianComptonProfile.h
+	inc/MantidCurveFitting/Functions/GramCharlierComptonProfile.h
+	inc/MantidCurveFitting/Functions/IkedaCarpenterPV.h
+	inc/MantidCurveFitting/Functions/LinearBackground.h
+	inc/MantidCurveFitting/Functions/LogNormal.h
+	inc/MantidCurveFitting/Functions/Lorentzian.h
+	inc/MantidCurveFitting/Functions/Lorentzian1D.h
+	inc/MantidCurveFitting/Functions/MuonFInteraction.h
+	inc/MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h
+	inc/MantidCurveFitting/Functions/PawleyFunction.h
+	inc/MantidCurveFitting/Functions/PeakParameterFunction.h
+	inc/MantidCurveFitting/Functions/Polynomial.h
+	inc/MantidCurveFitting/Functions/ProcessBackground.h
+	inc/MantidCurveFitting/Functions/ProductFunction.h
+	inc/MantidCurveFitting/Functions/ProductLinearExp.h
+	inc/MantidCurveFitting/Functions/ProductQuadraticExp.h
+	inc/MantidCurveFitting/Functions/PseudoVoigt.h
+	inc/MantidCurveFitting/Functions/Quadratic.h
+	inc/MantidCurveFitting/Functions/ReflectivityMulf.h
+	inc/MantidCurveFitting/Functions/Resolution.h
+	inc/MantidCurveFitting/Functions/SimpleChebfun.h
+	inc/MantidCurveFitting/Functions/StaticKuboToyabe.h
+	inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h
+	inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h
+	inc/MantidCurveFitting/Functions/StretchExp.h
+	inc/MantidCurveFitting/Functions/StretchExpMuon.h
+	inc/MantidCurveFitting/Functions/TabulatedFunction.h
+	inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h
+	inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h
+	inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h
+	inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h
+	inc/MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h
+	inc/MantidCurveFitting/Functions/UserFunction.h
+	inc/MantidCurveFitting/Functions/UserFunction1D.h
+	inc/MantidCurveFitting/Functions/VesuvioResolution.h
+	inc/MantidCurveFitting/Functions/Voigt.h
 	inc/MantidCurveFitting/GSLFunctions.h
 	inc/MantidCurveFitting/GSLJacobian.h
 	inc/MantidCurveFitting/GSLMatrix.h
 	inc/MantidCurveFitting/GSLVector.h
-	inc/MantidCurveFitting/GausDecay.h
-	inc/MantidCurveFitting/GausOsc.h
-	inc/MantidCurveFitting/Gaussian.h
-	inc/MantidCurveFitting/GaussianComptonProfile.h
-	inc/MantidCurveFitting/GramCharlierComptonProfile.h
 	inc/MantidCurveFitting/HalfComplex.h
 	inc/MantidCurveFitting/IFittingAlgorithm.h
-	inc/MantidCurveFitting/IkedaCarpenterPV.h
 	inc/MantidCurveFitting/Jacobian.h
 	inc/MantidCurveFitting/LatticeDomainCreator.h
 	inc/MantidCurveFitting/LatticeFunction.h
-	inc/MantidCurveFitting/LeBailFit.h
-	inc/MantidCurveFitting/LeBailFunction.h
-	inc/MantidCurveFitting/LevenbergMarquardtMDMinimizer.h
-	inc/MantidCurveFitting/LevenbergMarquardtMinimizer.h
-	inc/MantidCurveFitting/LinearBackground.h
-	inc/MantidCurveFitting/LogNormal.h
-	inc/MantidCurveFitting/Lorentzian.h
-	inc/MantidCurveFitting/Lorentzian1D.h
 	inc/MantidCurveFitting/MSVesuvioHelpers.h
 	inc/MantidCurveFitting/MultiDomainCreator.h
-	inc/MantidCurveFitting/MuonFInteraction.h
-	inc/MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h
-	inc/MantidCurveFitting/NormaliseByPeakArea.h
-	inc/MantidCurveFitting/PRConjugateGradientMinimizer.h
 	inc/MantidCurveFitting/ParDomain.h
 	inc/MantidCurveFitting/ParameterEstimator.h
-	inc/MantidCurveFitting/PawleyFit.h
-	inc/MantidCurveFitting/PawleyFunction.h
-	inc/MantidCurveFitting/PeakParameterFunction.h
-	inc/MantidCurveFitting/PlotPeakByLogValue.h
-	inc/MantidCurveFitting/Polynomial.h
-	inc/MantidCurveFitting/ProcessBackground.h
-	inc/MantidCurveFitting/ProductFunction.h
-	inc/MantidCurveFitting/ProductLinearExp.h
-	inc/MantidCurveFitting/ProductQuadraticExp.h
-	inc/MantidCurveFitting/PseudoVoigt.h
-	inc/MantidCurveFitting/Quadratic.h
-	inc/MantidCurveFitting/RefinePowderInstrumentParameters3.h
-	inc/MantidCurveFitting/ReflectivityMulf.h
-	inc/MantidCurveFitting/Resolution.h
 	inc/MantidCurveFitting/SeqDomain.h
 	inc/MantidCurveFitting/SeqDomainSpectrumCreator.h
-	inc/MantidCurveFitting/SimpleChebfun.h
-	inc/MantidCurveFitting/SimplexMinimizer.h
 	inc/MantidCurveFitting/SpecialFunctionSupport.h
-	inc/MantidCurveFitting/SplineBackground.h
-	inc/MantidCurveFitting/SplineInterpolation.h
-	inc/MantidCurveFitting/SplineSmoothing.h
-	inc/MantidCurveFitting/StaticKuboToyabe.h
-	inc/MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h
-	inc/MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h
-	inc/MantidCurveFitting/SteepestDescentMinimizer.h
-	inc/MantidCurveFitting/StretchExp.h
-	inc/MantidCurveFitting/StretchExpMuon.h
-	inc/MantidCurveFitting/TabulatedFunction.h
-	inc/MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h
-	inc/MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h
-	inc/MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h
-	inc/MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h
-	inc/MantidCurveFitting/ThermalNeutronDtoTOFFunction.h
-	inc/MantidCurveFitting/UserFunction.h
-	inc/MantidCurveFitting/UserFunction1D.h
-	inc/MantidCurveFitting/VesuvioResolution.h
-	inc/MantidCurveFitting/Voigt.h
 )
 
 set ( TEST_FILES
 	# ChebyshevPolynomialBackgroundTest.h
 	# RefinePowderInstrumentParametersTest.h
 	#SCDPanelErrorsTest.h
-	AbragamTest.h
+	Algorithms/CalculateChiSquaredTest.h
+	Algorithms/CalculateGammaBackgroundTest.h
+	Algorithms/CalculateMSVesuvioTest.h
+	Algorithms/ConvertToYSpaceTest.h
+	Algorithms/ConvolveWorkspacesTest.h
+	Algorithms/EstimatePeakErrorsTest.h
+	Algorithms/EvaluateFunctionTest.h
+	Algorithms/FitPowderDiffPeaksTest.h
+	Algorithms/FitTest.h
+	Algorithms/LeBailFitTest.h
+	Algorithms/LeBailFunctionTest.h
+	Algorithms/NormaliseByPeakAreaTest.h
+	Algorithms/PawleyFitTest.h
+	Algorithms/PlotPeakByLogValueTest.h
+	Algorithms/RefinePowderInstrumentParameters3Test.h
+	Algorithms/RefinePowderInstrumentParametersTest.h
+	Algorithms/SeqDomainSpectrumCreatorTest.h
+	Algorithms/SplineBackgroundTest.h
+	Algorithms/SplineInterpolationTest.h
+	Algorithms/SplineSmoothingTest.h
 	AugmentedLagrangianOptimizerTest.h
-	BFGSTest.h
-	BSplineTest.h
-	BackToBackExponentialTest.h
-	BivariateNormalTest.h
-	Bk2BkExpConvPVTest.h
-	BoundaryConstraintTest.h
-	CalculateChiSquaredTest.h
-	CalculateGammaBackgroundTest.h
-	CalculateMSVesuvioTest.h
-	ChebfunBaseTest.h
-	ChebyshevTest.h
 	CompositeFunctionTest.h
-	ComptonPeakProfileTest.h
-	ComptonProfileTest.h
-	ComptonScatteringCountRateTest.h
-	ConvertToYSpaceTest.h
-	ConvolutionTest.h
-	ConvolveWorkspacesTest.h
-	CostFuncUnweightedLeastSquaresTest.h
-	CubicSplineTest.h
-	DampingMinimizerTest.h
-	DeltaFunctionTest.h
-	DiffRotDiscreteCircleTest.h
-	DiffSphereTest.h
-	DynamicKuboToyabeTest.h
-	EndErfcTest.h
-	EstimatePeakErrorsTest.h
-	EvaluateFunctionTest.h
-	ExpDecayMuonTest.h
-	ExpDecayOscTest.h
-	ExpDecayTest.h
-	FABADAMinimizerTest.h
-	FRConjugateGradientTest.h
+	Constraints/BoundaryConstraintTest.h
+	CostFunctions/CostFuncUnweightedLeastSquaresTest.h
+	CostFunctions/LeastSquaresTest.h
 	FitMWTest.h
-	FitPowderDiffPeaksTest.h
-	FitTest.h
-	FlatBackgroundTest.h
-	FullprofPolynomialTest.h
+	FuncMinimizers/BFGSTest.h
+	FuncMinimizers/DampingMinimizerTest.h
+	FuncMinimizers/FABADAMinimizerTest.h
+	FuncMinimizers/FRConjugateGradientTest.h
+	FuncMinimizers/LevenbergMarquardtMDTest.h
+	FuncMinimizers/LevenbergMarquardtTest.h
+	FuncMinimizers/PRConjugateGradientTest.h
+	FuncMinimizers/SimplexTest.h
 	FunctionDomain1DSpectrumCreatorTest.h
 	FunctionFactoryConstraintTest.h
 	FunctionParameterDecoratorFitTest.h
+	Functions/AbragamTest.h
+	Functions/BSplineTest.h
+	Functions/BackToBackExponentialTest.h
+	Functions/BivariateNormalTest.h
+	Functions/Bk2BkExpConvPVTest.h
+	Functions/ChebfunBaseTest.h
+	Functions/ChebyshevTest.h
+	Functions/ComptonPeakProfileTest.h
+	Functions/ComptonProfileTest.h
+	Functions/ComptonScatteringCountRateTest.h
+	Functions/ConvolutionTest.h
+	Functions/CubicSplineTest.h
+	Functions/DeltaFunctionTest.h
+	Functions/DiffRotDiscreteCircleTest.h
+	Functions/DiffSphereTest.h
+	Functions/DynamicKuboToyabeTest.h
+	Functions/EndErfcTest.h
+	Functions/ExpDecayMuonTest.h
+	Functions/ExpDecayOscTest.h
+	Functions/ExpDecayTest.h
+	Functions/FlatBackgroundTest.h
+	Functions/FullprofPolynomialTest.h
+	Functions/GausDecayTest.h
+	Functions/GausOscTest.h
+	Functions/GaussianComptonProfileTest.h
+	Functions/GaussianTest.h
+	Functions/GramCharlierComptonProfileTest.h
+	Functions/IkedaCarpenterPVTest.h
+	Functions/LinearBackgroundTest.h
+	Functions/LogNormalTest.h
+	Functions/Lorentzian1DTest.h
+	Functions/LorentzianTest.h
+	Functions/MuonFInteractionTest.h
+	Functions/NeutronBk2BkExpConvPVoigtTest.h
+	Functions/PawleyFunctionTest.h
+	Functions/PeakParameterFunctionTest.h
+	Functions/PolynomialTest.h
+	Functions/ProcessBackgroundTest.h
+	Functions/ProductFunctionTest.h
+	Functions/ProductLinearExpTest.h
+	Functions/ProductQuadraticExpTest.h
+	Functions/PseudoVoigtTest.h
+	Functions/QuadraticTest.h
+	Functions/ReflectivityMulfTest.h
+	Functions/ResolutionTest.h
+	Functions/SimpleChebfunTest.h
+	Functions/StaticKuboToyabeTest.h
+	Functions/StaticKuboToyabeTimesExpDecayTest.h
+	Functions/StaticKuboToyabeTimesGausDecayTest.h
+	Functions/StretchExpMuonTest.h
+	Functions/StretchExpTest.h
+	Functions/TabulatedFunctionTest.h
+	Functions/ThermalNeutronBk2BkExpAlphaTest.h
+	Functions/ThermalNeutronBk2BkExpBetaTest.h
+	Functions/ThermalNeutronBk2BkExpConvPVoigtTest.h
+	Functions/ThermalNeutronBk2BkExpSigmaTest.h
+	Functions/ThermalNeutronDtoTOFFunctionTest.h
+	Functions/UserFunction1DTest.h
+	Functions/UserFunctionTest.h
+	Functions/VesuvioResolutionTest.h
+	Functions/VoigtTest.h
 	GSLMatrixTest.h
 	GSLVectorTest.h
-	GausDecayTest.h
-	GausOscTest.h
-	GaussianComptonProfileTest.h
-	GaussianTest.h
-	GramCharlierComptonProfileTest.h
 	IPeakFunctionCentreParameterNameTest.h
 	IPeakFunctionIntensityTest.h
-	IkedaCarpenterPVTest.h
 	LatticeDomainCreatorTest.h
 	LatticeFunctionTest.h
-	LeBailFitTest.h
-	LeBailFunctionTest.h
-	LeastSquaresTest.h
-	LevenbergMarquardtMDTest.h
-	LevenbergMarquardtTest.h
-	LinearBackgroundTest.h
-	LogNormalTest.h
-	Lorentzian1DTest.h
-	LorentzianTest.h
 	MultiDomainCreatorTest.h
 	MultiDomainFunctionTest.h
-	MuonFInteractionTest.h
-	NeutronBk2BkExpConvPVoigtTest.h
-	NormaliseByPeakAreaTest.h
-	PRConjugateGradientTest.h
 	ParameterEstimatorTest.h
-	PawleyFitTest.h
-	PawleyFunctionTest.h
-	PeakParameterFunctionTest.h
-	PlotPeakByLogValueTest.h
-	PolynomialTest.h
-	ProcessBackgroundTest.h
-	ProductFunctionTest.h
-	ProductLinearExpTest.h
-	ProductQuadraticExpTest.h
-	PseudoVoigtTest.h
-	QuadraticTest.h
-	RefinePowderInstrumentParameters3Test.h
-	ReflectivityMulfTest.h
-	ResolutionTest.h
-	SeqDomainSpectrumCreatorTest.h
-	SimpleChebfunTest.h
-	SimplexTest.h
 	SpecialFunctionSupportTest.h
-	SplineBackgroundTest.h
-	SplineInterpolationTest.h
-	SplineSmoothingTest.h
-	StaticKuboToyabeTest.h
-	StaticKuboToyabeTimesExpDecayTest.h
-	StaticKuboToyabeTimesGausDecayTest.h
-	StretchExpMuonTest.h
-	StretchExpTest.h
-	TabulatedFunctionTest.h
-	ThermalNeutronBk2BkExpAlphaTest.h
-	ThermalNeutronBk2BkExpBetaTest.h
-	ThermalNeutronBk2BkExpConvPVoigtTest.h
-	ThermalNeutronBk2BkExpSigmaTest.h
-	ThermalNeutronDtoTOFFunctionTest.h
-	UserFunction1DTest.h
-	UserFunctionTest.h
-	VesuvioResolutionTest.h
-	VoigtTest.h
 )
 
 if (COVERALLS)
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateChiSquared.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateChiSquared.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CalculateChiSquared.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateChiSquared.h
index 34d50d67839be92218d2d149aad8272f7c9ce575..867ec832b324d9ad2353e516c3235fc791d48ed4 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateChiSquared.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateChiSquared.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /**
 
@@ -51,6 +52,7 @@ private:
   std::vector<size_t> m_fixedParameters;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateGammaBackground.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateGammaBackground.h
similarity index 87%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CalculateGammaBackground.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateGammaBackground.h
index 4cf7ebc54a20af54e0396148ebdf74ccbca95d21..ac575bb8035a120fd8e0e3cc51739cd693b26f2d 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateGammaBackground.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateGammaBackground.h
@@ -7,11 +7,14 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+struct ResolutionParams;
+}
+namespace Algorithms {
 //---------------------------------------------------------------------------
 // Forward declarations
 //---------------------------------------------------------------------------
 struct DetectorParams;
-struct ResolutionParams;
 
 /**
 
@@ -75,17 +78,17 @@ private:
   void calculateBackgroundFromFoils(const size_t inputIndex,
                                     const size_t outputIndex);
   /// Compute expected background from single foil for spectrum at wsIndex
-  void calculateBackgroundSingleFoil(std::vector<double> &ctfoil,
-                                     const size_t wsIndex,
-                                     const FoilInfo &foilInfo,
-                                     const Kernel::V3D &detPos,
-                                     const DetectorParams &detPar,
-                                     const ResolutionParams &detRes);
+  void calculateBackgroundSingleFoil(
+      std::vector<double> &ctfoil, const size_t wsIndex,
+      const FoilInfo &foilInfo, const Kernel::V3D &detPos,
+      const DetectorParams &detPar,
+      const CurveFitting::Functions::ResolutionParams &detRes);
   /// Compute a TOF spectrum for the given inputs & spectrum
-  void calculateTofSpectrum(std::vector<double> &result,
-                            std::vector<double> &tmpWork, const size_t wsIndex,
-                            const DetectorParams &detpar,
-                            const ResolutionParams &respar);
+  void
+  calculateTofSpectrum(std::vector<double> &result,
+                       std::vector<double> &tmpWork, const size_t wsIndex,
+                       const DetectorParams &detpar,
+                       const CurveFitting::Functions::ResolutionParams &respar);
 
   /// Check and store appropriate input data
   void retrieveInputs();
@@ -133,6 +136,7 @@ private:
   API::Progress *m_progress;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateMSVesuvio.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateMSVesuvio.h
similarity index 93%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CalculateMSVesuvio.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateMSVesuvio.h
index 71b9767435f032f9d4564ec8ef53d4dd5ee160a6..96d84d452dadbbff40e58b32c09184768055420b 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CalculateMSVesuvio.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/CalculateMSVesuvio.h
@@ -9,16 +9,16 @@
 
 namespace Mantid {
 namespace CurveFitting {
-//-----------------------------------------------------------------------------
-// CurveFitting forward declarations
-//-----------------------------------------------------------------------------
-struct DetectorParams;
-struct ResolutionParams;
 namespace MSVesuvioHelper {
 class RandomNumberGenerator;
 struct Simulation;
 struct SimulationWithErrors;
 }
+namespace Functions {
+struct ResolutionParams;
+}
+namespace Algorithms {
+struct DetectorParams;
 
 /**
   Calculates the multiple scattering & total scattering contributions
@@ -88,12 +88,13 @@ private:
   void cacheInputs();
   void calculateMS(const size_t wsIndex, API::ISpectrum &totalsc,
                    API::ISpectrum &multsc) const;
-  void simulate(const DetectorParams &detpar, const ResolutionParams &respar,
+  void simulate(const DetectorParams &detpar,
+                const Functions::ResolutionParams &respar,
                 MSVesuvioHelper::Simulation &simulCounts) const;
   void assignToOutput(const MSVesuvioHelper::SimulationWithErrors &avgCounts,
                       API::ISpectrum &totalsc, API::ISpectrum &multsc) const;
   double calculateCounts(const DetectorParams &detpar,
-                         const ResolutionParams &respar,
+                         const Functions::ResolutionParams &respar,
                          MSVesuvioHelper::Simulation &simulation) const;
 
   // single-event helpers
@@ -116,7 +117,8 @@ private:
                     const double e1res) const;
 
   // Member Variables
-  MSVesuvioHelper::RandomNumberGenerator *m_randgen; // random number generator
+  CurveFitting::MSVesuvioHelper::RandomNumberGenerator *
+      m_randgen; // random number generator
 
   size_t m_acrossIdx, m_upIdx, m_beamIdx; // indices of each direction
   Kernel::V3D m_beamDir;                  // Directional vector for beam
@@ -136,6 +138,7 @@ private:
   API::MatrixWorkspace_sptr m_inputWS;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ConvertToYSpace.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvertToYSpace.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ConvertToYSpace.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvertToYSpace.h
index c548e60ad362f48487a0dfdb134dc85c73cfccdd..6ed4648408a367518609fab46670ec8d4c4dbe18 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ConvertToYSpace.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvertToYSpace.h
@@ -5,6 +5,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /// Simple data structure to store nominal detector values
 /// It avoids some functions taking a huge number of arguments
@@ -101,6 +102,7 @@ private:
   API::MatrixWorkspace_sptr m_qOutputWS;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ConvolveWorkspaces.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvolveWorkspaces.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ConvolveWorkspaces.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvolveWorkspaces.h
index 30ad9f3f040bf284b2274e08dbd3753b665eff41..19fa08127b0e1a54c8fdd6a0a6594e1faba251ec 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ConvolveWorkspaces.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/ConvolveWorkspaces.h
@@ -9,12 +9,13 @@
 #include "MantidAPI/MatrixWorkspace_fwd.h"
 #include "MantidDataObjects/EventWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
-#include "MantidCurveFitting/CubicSpline.h"
+#include "MantidCurveFitting/Functions/CubicSpline.h"
 #include "MantidAPI/ParamFunction.h"
 #include "MantidAPI/IFunction1D.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 /** Convolution of two workspaces
 
     Copyright &copy; 2012 ISIS Rutherford Appleton Laboratory, NScD Oak Ridge
@@ -65,6 +66,7 @@ private:
   API::Progress *prog;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/EstimatePeakErrors.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EstimatePeakErrors.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/EstimatePeakErrors.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EstimatePeakErrors.h
index fa886873c50b189aa5aab1cb5bc594f5b5a98c5b..c16a6b037959f973eed6c93204d73d11ed92ac45 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/EstimatePeakErrors.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EstimatePeakErrors.h
@@ -5,6 +5,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 //---------------------------------------------------------------------------
 /**
 
@@ -44,6 +45,7 @@ private:
   void exec();
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/EvaluateFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EvaluateFunction.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/EvaluateFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EvaluateFunction.h
index 48bfd7abe57983d68d45b5c817c6361fb06313fa..55be4b63901ced996a404c85b2980f8702f52d29 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/EvaluateFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/EvaluateFunction.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /**
 
@@ -44,6 +45,7 @@ private:
   void execConcrete();
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Fit.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Fit.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit.h
index baaf264d06d012cfa0efda8169d7ae9181d28c68..20c76810d8a5affe143d42be189d9fd0b77ca9d6 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Fit.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit.h
@@ -20,6 +20,7 @@ class IFuncMinimizer;
 }
 
 namespace CurveFitting {
+namespace Algorithms {
 /**
 
 A generic fitting algorithm. It fits a function to some data in a workspace.
@@ -114,6 +115,7 @@ protected:
   void copyMinimizerOutput(const API::IFuncMinimizer &minimizer);
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Fit1D.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit1D.h
similarity index 99%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Fit1D.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit1D.h
index 132ce49ede9e9ea965ca0537a32b2925355d4b0c..9cfc546a20c3023fc0d609560b8d3eece550cf72 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Fit1D.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit1D.h
@@ -10,6 +10,7 @@
 namespace Mantid {
 
 namespace CurveFitting {
+namespace Algorithms {
 /**
 Deprecation notice: instead of using this algorithm please use the Fit algorithm
 instead.
@@ -140,6 +141,7 @@ protected:
   friend struct FitData;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/FitPowderDiffPeaks.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h
similarity index 77%
rename from Framework/CurveFitting/inc/MantidCurveFitting/FitPowderDiffPeaks.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h
index 1fe1d2551ebe75f32516f0077b138a6c153f8fc3..5436f304f29d3fd7a7076d4dcfca9dab48dd0b03 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/FitPowderDiffPeaks.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h
@@ -8,13 +8,14 @@
 #include "MantidAPI/ITableWorkspace_fwd.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
-#include "MantidCurveFitting/Polynomial.h"
-#include "MantidCurveFitting/BackToBackExponential.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
+#include "MantidCurveFitting/Functions/BackToBackExponential.h"
 #include "MantidGeometry/Crystal/UnitCell.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** FitPowderDiffPeaks : Fit peaks in powder diffraction pattern.
 
@@ -88,7 +89,7 @@ private:
   void genPeaksFromTable(DataObjects::TableWorkspace_sptr peakparamws);
 
   /// Generate a peak
-  BackToBackExponential_sptr
+  Functions::BackToBackExponential_sptr
   genPeak(std::map<std::string, int> hklmap,
           std::map<std::string, double> parammap,
           std::map<std::string, std::string> bk2bk2braggmap, bool &good,
@@ -114,62 +115,66 @@ private:
   void fitPeaksRobust();
 
   /// Fit a single peak
-  bool fitPeak(BackToBackExponential_sptr peak,
-               BackgroundFunction_sptr background, double leftdev,
+  bool fitPeak(Functions::BackToBackExponential_sptr peak,
+               Functions::BackgroundFunction_sptr background, double leftdev,
                double rightdev, size_t m_wsIndex, double &chi2);
 
   //---------------------------------------------------------------------------
 
   /// Fit single peak in robust mode (no hint)
-  bool fitSinglePeakRobust(BackToBackExponential_sptr peak,
-                           BackgroundFunction_sptr background, double leftdev,
-                           double rightdev,
-                           std::map<std::string, double> rightpeakparammap,
-                           double &finalchi2);
+  bool
+  fitSinglePeakRobust(Functions::BackToBackExponential_sptr peak,
+                      Functions::BackgroundFunction_sptr backgroundfunction,
+                      double leftdev, double rightdev,
+                      std::map<std::string, double> rightpeakparammap,
+                      double &finalchi2);
 
   /// Fit signle peak by Monte Carlo/simulated annealing
-  bool fitSinglePeakSimulatedAnnealing(BackToBackExponential_sptr peak,
-                                       std::vector<std::string> paramtodomc);
+  bool
+  fitSinglePeakSimulatedAnnealing(Functions::BackToBackExponential_sptr peak,
+                                  std::vector<std::string> paramtodomc);
 
   /// Fit peak with confidence of the centre
-  bool fitSinglePeakConfidentX(BackToBackExponential_sptr peak);
+  bool fitSinglePeakConfidentX(Functions::BackToBackExponential_sptr peak);
 
   /// Fit peak with trustful peak parameters
-  bool fitSinglePeakConfident(BackToBackExponential_sptr peak,
-                              BackgroundFunction_sptr backgroundfunction,
-                              double leftbound, double rightbound, double &chi2,
-                              bool &annhilatedpeak);
+  bool
+  fitSinglePeakConfident(Functions::BackToBackExponential_sptr peak,
+                         Functions::BackgroundFunction_sptr backgroundfunction,
+                         double leftbound, double rightbound, double &chi2,
+                         bool &annhilatedpeak);
 
   /// Fit peak with confident parameters
   bool fitSinglePeakConfidentY(DataObjects::Workspace2D_sptr dataws,
-                               BackToBackExponential_sptr peak,
+                               Functions::BackToBackExponential_sptr peak,
                                double dampingfactor);
 
   /// Fit peaks with confidence in fwhm and etc.
-  bool fitOverlappedPeaks(std::vector<BackToBackExponential_sptr> peaks,
-                          BackgroundFunction_sptr backgroundfunction,
-                          double gfwhm);
+  bool
+  fitOverlappedPeaks(std::vector<Functions::BackToBackExponential_sptr> peaks,
+                     Functions::BackgroundFunction_sptr backgroundfunction,
+                     double gfwhm);
 
   /// Fit multiple (overlapped) peaks
-  bool doFitMultiplePeaks(DataObjects::Workspace2D_sptr dataws, size_t wsindex,
-                          API::CompositeFunction_sptr peaksfunc,
-                          std::vector<BackToBackExponential_sptr> peakfuncs,
-                          std::vector<bool> &vecfitgood,
-                          std::vector<double> &vecchi2s);
+  bool doFitMultiplePeaks(
+      DataObjects::Workspace2D_sptr dataws, size_t wsindex,
+      API::CompositeFunction_sptr peaksfunc,
+      std::vector<Functions::BackToBackExponential_sptr> peakfuncs,
+      std::vector<bool> &vecfitgood, std::vector<double> &vecchi2s);
 
   /// Use Le Bail method to estimate and set the peak heights
-  void estimatePeakHeightsLeBail(DataObjects::Workspace2D_sptr dataws,
-                                 size_t wsindex,
-                                 std::vector<BackToBackExponential_sptr> peaks);
+  void estimatePeakHeightsLeBail(
+      DataObjects::Workspace2D_sptr dataws, size_t wsindex,
+      std::vector<Functions::BackToBackExponential_sptr> peaks);
 
   /// Set constraints on a group of overlapped peaks for fitting
-  void
-  setOverlappedPeaksConstraints(std::vector<BackToBackExponential_sptr> peaks);
+  void setOverlappedPeaksConstraints(
+      std::vector<Functions::BackToBackExponential_sptr> peaks);
 
   /// Fit 1 peak by 1 minimizer of 1 call of minimzer (simple version)
   bool doFit1PeakSimple(DataObjects::Workspace2D_sptr dataws,
                         size_t workspaceindex,
-                        BackToBackExponential_sptr peakfunction,
+                        Functions::BackToBackExponential_sptr peakfunction,
                         std::string minimzername, size_t maxiteration,
                         double &chi2);
 
@@ -181,25 +186,26 @@ private:
   // string minimzername, size_t maxiteration, double &chi2);
 
   /// Fit single peak with background to raw data
-  bool doFit1PeakBackground(DataObjects::Workspace2D_sptr dataws,
-                            size_t wsindex, BackToBackExponential_sptr peak,
-                            BackgroundFunction_sptr backgroundfunction,
-                            double &chi2);
+  bool
+  doFit1PeakBackground(DataObjects::Workspace2D_sptr dataws, size_t wsindex,
+                       Functions::BackToBackExponential_sptr peak,
+                       Functions::BackgroundFunction_sptr backgroundfunction,
+                       double &chi2);
 
   /// Fit 1 peak by using a sequential of minimizer
   bool doFit1PeakSequential(DataObjects::Workspace2D_sptr dataws,
                             size_t workspaceindex,
-                            BackToBackExponential_sptr peakfunction,
+                            Functions::BackToBackExponential_sptr peakfunction,
                             std::vector<std::string> minimzernames,
                             std::vector<size_t> maxiterations,
                             std::vector<double> dampfactors, double &chi2);
 
   /// Fit N overlapped peaks in a simple manner
-  bool doFitNPeaksSimple(DataObjects::Workspace2D_sptr dataws, size_t wsindex,
-                         API::CompositeFunction_sptr peaksfunc,
-                         std::vector<BackToBackExponential_sptr> peakfuncs,
-                         std::string minimizername, size_t maxiteration,
-                         double &chi2);
+  bool doFitNPeaksSimple(
+      DataObjects::Workspace2D_sptr dataws, size_t wsindex,
+      API::CompositeFunction_sptr peaksfunc,
+      std::vector<Functions::BackToBackExponential_sptr> peakfuncs,
+      std::string minimizername, size_t maxiteration, double &chi2);
 
   /// Store the function's parameter values to a map
   void storeFunctionParameters(API::IFunction_sptr function,
@@ -241,15 +247,15 @@ private:
   // double leftbound, double rightbound);
 
   /// Estimate the range of a single peak
-  bool estimateSinglePeakRange(BackToBackExponential_sptr peak,
-                               BackgroundFunction_sptr background,
-                               BackToBackExponential_sptr rightpeak,
+  bool estimateSinglePeakRange(Functions::BackToBackExponential_sptr peak,
+                               Functions::BackgroundFunction_sptr background,
+                               Functions::BackToBackExponential_sptr rightpeak,
                                double fwhm, bool ismostright, size_t m_wsIndex,
                                double &chi2);
 
   /// Observe peak range with hint from right peak's properties
-  void observePeakRange(BackToBackExponential_sptr thispeak,
-                        BackToBackExponential_sptr rightpeak,
+  void observePeakRange(Functions::BackToBackExponential_sptr thispeak,
+                        Functions::BackToBackExponential_sptr rightpeak,
                         double refpeakshift, double &peakleftbound,
                         double &peakrightbound);
 
@@ -266,17 +272,19 @@ private:
 
   /// Fit background function by removing the peak properly
   bool doFitBackground(DataObjects::Workspace2D_sptr dataws,
-                       BackgroundFunction_sptr background, double leftpeakbound,
-                       double rightpeakbound);
+                       Functions::BackgroundFunction_sptr background,
+                       double leftpeakbound, double rightpeakbound);
 
   /// Fit single peak without background
-  std::pair<bool, double> doFitPeak_Old(DataObjects::Workspace2D_sptr dataws,
-                                        BackToBackExponential_sptr peak,
-                                        double guessedfwhm, bool calchi2);
+  std::pair<bool, double>
+  doFitPeak_Old(DataObjects::Workspace2D_sptr dataws,
+                Functions::BackToBackExponential_sptr peak, double guessedfwhm,
+                bool calchi2);
 
-  std::pair<bool, double> doFitPeak(DataObjects::Workspace2D_sptr dataws,
-                                    BackToBackExponential_sptr peakfunction,
-                                    double guessedfwhm);
+  std::pair<bool, double>
+  doFitPeak(DataObjects::Workspace2D_sptr dataws,
+            Functions::BackToBackExponential_sptr peakfunction,
+            double guessedfwhm);
 
   /// Fit background-removed peak by Gaussian
   bool doFitGaussianPeak(DataObjects::Workspace2D_sptr dataws, size_t m_wsIndex,
@@ -289,7 +297,7 @@ private:
 
   /// Calcualte the value of a single peak in a given range.
   void calculate1PeakGroup(std::vector<size_t> peakindexes,
-                           BackgroundFunction_sptr background);
+                           Functions::BackgroundFunction_sptr background);
 
   /// Parse the fitting result
   std::string parseFitResult(API::IAlgorithm_sptr fitalg, double &chi2,
@@ -312,7 +320,7 @@ private:
 
   /// Plot a single peak to output vector
   void plotFunction(API::IFunction_sptr peakfunction,
-                    BackgroundFunction_sptr background,
+                    Functions::BackgroundFunction_sptr background,
                     API::FunctionDomain1DVector domain);
 
   //-----------------------------------------------------------------------------------------------
@@ -331,8 +339,9 @@ private:
   // CurveFitting::BackToBackExponential_sptr> m_peaksmap;
 
   /// Sorted vector for peaks.  double = d_h, vector = (HKL), peak
-  std::vector<std::pair<
-      double, std::pair<std::vector<int>, BackToBackExponential_sptr>>>
+  std::vector<
+      std::pair<double, std::pair<std::vector<int>,
+                                  Functions::BackToBackExponential_sptr>>>
       m_vecPeakFunctions;
 
   /// Peak fitting information
@@ -415,7 +424,7 @@ inline double linearInterpolateY(double x0, double xf, double y0, double yf,
 
 /// Estimate background for a pattern in a coarse mode
 void estimateBackgroundCoarse(DataObjects::Workspace2D_sptr dataws,
-                              BackgroundFunction_sptr background,
+                              Functions::BackgroundFunction_sptr background,
                               size_t wsindexraw, size_t wsindexbkgd,
                               size_t wsindexpeak);
 
@@ -434,6 +443,7 @@ size_t findMaxValue(API::MatrixWorkspace_sptr dataws, size_t wsindex,
 /// Get function parameter name, value and etc information in string
 std::string getFunctionInfo(API::IFunction_sptr function);
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LeBailFit.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFit.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LeBailFit.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFit.h
index cd60219519794d3d0e53e12965233f4402904dfb..dd92a572da7db455acf9c7552bbc80132b9fb799 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LeBailFit.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFit.h
@@ -3,19 +3,20 @@
 
 #include "MantidKernel/System.h"
 #include "MantidAPI/Algorithm.h"
-#include "MantidCurveFitting/LeBailFunction.h"
+#include "MantidCurveFitting/Algorithms/LeBailFunction.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidAPI/MatrixWorkspace_fwd.h"
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include "MantidAPI/ITableWorkspace_fwd.h"
 #include "MantidAPI/IFunction.h"
 #include <gsl/gsl_sf_erf.h>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** LeBailFit : Algorithm to do Le Bail Fit.
   The workflow and architecture of this algorithm is different from LeBailFit,
@@ -136,7 +137,7 @@ private:
   /// Examine whether the insturment parameter set to a peak can cause a valid
   /// set of peak profile of that peak
   bool examinInstrumentParameterValid(
-      CurveFitting::ThermalNeutronBk2BkExpConvPVoigt_sptr peak, double &d_h,
+      Functions::ThermalNeutronBk2BkExpConvPVoigt_sptr peak, double &d_h,
       double &tof_h, std::string &errmsg);
 
   /// Set parameters to each peak
@@ -161,14 +162,13 @@ private:
 
   /// Group peaks together
   void groupPeaks(std::vector<std::vector<
-      std::pair<double, CurveFitting::ThermalNeutronBk2BkExpConvPVoigt_sptr>>> &
+      std::pair<double, Functions::ThermalNeutronBk2BkExpConvPVoigt_sptr>>> &
                       peakgroupvec);
 
   /// Calcualate the peak heights of a group of overlapped peaks
   bool calculateGroupPeakIntensities(
       std::vector<std::pair<
-          double, CurveFitting::ThermalNeutronBk2BkExpConvPVoigt_sptr>>
-          peakgroup,
+          double, Functions::ThermalNeutronBk2BkExpConvPVoigt_sptr>> peakgroup,
       API::MatrixWorkspace_sptr dataws, size_t wsindex, bool zerobackground,
       std::vector<double> &allpeaksvalues);
 
@@ -343,7 +343,7 @@ private:
   -------------------------------*/
 
   /// Background function
-  CurveFitting::BackgroundFunction_sptr m_backgroundFunction;
+  Functions::BackgroundFunction_sptr m_backgroundFunction;
 
   /// Function parameters updated by fit
   std::map<std::string, Parameter>
@@ -474,6 +474,7 @@ void convertTableWorkspaceToMaps(
     std::vector<std::map<std::string, std::string>> strmaps,
     std::vector<std::map<std::string, double>> dblmaps);
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LeBailFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFunction.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LeBailFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFunction.h
index 3b46dfb4dd6b4312a2783cad39b6ece8344d76e7..656bdc5066bd66ef1a1f9d93a07be215c3e1447c 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LeBailFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/LeBailFunction.h
@@ -5,14 +5,17 @@
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/MatrixWorkspace_fwd.h"
 #include "MantidAPI/IPowderDiffPeakFunction.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** LeBailFunction : LeBailFunction is to calculate peak intensities in a
  composite
  *                   function including neutron peak and background functions.
+ *                   Note: This is not a Mantid Fit Function, just a helper
+ *                   class to the algorithm
 
   @date 2013-04-26 : original LeBailFunction is not used by any other functions.
  And thus
@@ -174,7 +177,7 @@ private:
   /// Composite functions for all peaks and background
   API::CompositeFunction_sptr m_compsiteFunction;
   /// Background function
-  BackgroundFunction_sptr m_background;
+  Functions::BackgroundFunction_sptr m_background;
 
   /// Parameters
   std::map<std::string, double> m_functionParameters;
@@ -212,6 +215,7 @@ private:
 
 typedef boost::shared_ptr<LeBailFunction> LeBailFunction_sptr;
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/NormaliseByPeakArea.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/NormaliseByPeakArea.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/NormaliseByPeakArea.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/NormaliseByPeakArea.h
index 56ae1b98d345e495576ea53cf04931ecaebae29d..4cfac079922ccc7d1b7579199dad4aae0f9fc293 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/NormaliseByPeakArea.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/NormaliseByPeakArea.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /**
 
@@ -87,6 +88,7 @@ private:
   API::Progress *m_progress;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PawleyFit.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PawleyFit.h
similarity index 87%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PawleyFit.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PawleyFit.h
index c1c78b1044cd34e7e7a24c9d3277b1ae0b9098ba..7bddf3ec39884df67505bda3e8c5f800eda0ed2e 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PawleyFit.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PawleyFit.h
@@ -5,11 +5,12 @@
 #include "MantidAPI/Algorithm.h"
 #include "MantidAPI/ITableWorkspace_fwd.h"
 #include "MantidAPI/TableRow.h"
-#include "MantidCurveFitting/PawleyFunction.h"
+#include "MantidCurveFitting/Functions/PawleyFunction.h"
 #include "MantidKernel/Unit.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** @class V3DFromHKLColumnExtractor
 
@@ -76,18 +77,18 @@ public:
 protected:
   double getTransformedCenter(double d, const Kernel::Unit_sptr &unit) const;
 
-  void addHKLsToFunction(PawleyFunction_sptr &pawleyFn,
+  void addHKLsToFunction(Functions::PawleyFunction_sptr &pawleyFn,
                          const API::ITableWorkspace_sptr &tableWs,
                          const Kernel::Unit_sptr &unit, double startX,
                          double endX) const;
 
   API::ITableWorkspace_sptr
-  getLatticeFromFunction(const PawleyFunction_sptr &pawleyFn) const;
-  API::ITableWorkspace_sptr
-  getPeakParametersFromFunction(const PawleyFunction_sptr &pawleyFn) const;
+  getLatticeFromFunction(const Functions::PawleyFunction_sptr &pawleyFn) const;
+  API::ITableWorkspace_sptr getPeakParametersFromFunction(
+      const Functions::PawleyFunction_sptr &pawleyFn) const;
 
   API::IFunction_sptr
-  getCompositeFunction(const PawleyFunction_sptr &pawleyFn) const;
+  getCompositeFunction(const Functions::PawleyFunction_sptr &pawleyFn) const;
 
   void init();
   void exec();
@@ -95,6 +96,7 @@ protected:
   Kernel::Unit_sptr m_dUnit;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PlotPeakByLogValue.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PlotPeakByLogValue.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PlotPeakByLogValue.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PlotPeakByLogValue.h
index 891f455c6e78482bd644cc1a74e8a563730eded7..0c0acc74d34543a09c5202729c92f1c91aebdfaf 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PlotPeakByLogValue.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/PlotPeakByLogValue.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 /**
 
 Takes a workspace group and fits the same spectrum in all workspaces with
@@ -119,6 +120,7 @@ private:
   std::map<std::string, std::vector<std::string>> m_minimizerWorkspaces;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h
index eb79e0eaf8958e42e80b0abcc7362c135d35783e..9d3eeba57a4f02f257190c767a07f51f4f6f6df0 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h
@@ -8,15 +8,16 @@
 #include "MantidAPI/ITableWorkspace_fwd.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
-#include "MantidCurveFitting/Polynomial.h"
-#include "MantidCurveFitting/BackToBackExponential.h"
-#include "MantidCurveFitting/ThermalNeutronDtoTOFFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
+#include "MantidCurveFitting/Functions/BackToBackExponential.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h"
 #include "MantidAPI/FunctionDomain.h"
 #include "MantidAPI/FunctionValues.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** RefinePowderInstrumentParameters : Algorithm to refine instrument geometry
   parameters only.
@@ -154,7 +155,7 @@ private:
   DataObjects::Workspace2D_sptr m_dataWS;
 
   /// Map for all peaks to fit individually
-  std::map<std::vector<int>, CurveFitting::BackToBackExponential_sptr> m_Peaks;
+  std::map<std::vector<int>, Functions::BackToBackExponential_sptr> m_Peaks;
 
   /// Map for all peaks' error (fitted vs. experimental): [HKL]: Chi^2
   std::map<std::vector<int>, double> m_PeakErrors;
@@ -187,7 +188,7 @@ private:
   size_t m_MaxNumberStoredParameters;
 
   /// Modelling function
-  CurveFitting::ThermalNeutronDtoTOFFunction_sptr m_Function;
+  Functions::ThermalNeutronDtoTOFFunction_sptr m_Function;
 };
 
 /** Formular for linear iterpolation: X = [(xf-x0)*Y - (xf*y0-x0*yf)]/(yf-y0)
@@ -206,6 +207,7 @@ inline double linearInterpolateY(double x0, double xf, double y0, double yf,
   return y;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters3.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters3.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h
index 3af13a083e66cdfd186c9115c029b3ade0b6a252..56875c6c88568c1c49d67c13d29018a34627fb3b 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/RefinePowderInstrumentParameters3.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h
@@ -8,12 +8,13 @@
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 
-#include "MantidCurveFitting/LeBailFit.h"
-#include "MantidCurveFitting/ThermalNeutronDtoTOFFunction.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/LeBailFit.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** RefinePowderInstrumentParameters3 :
 
@@ -183,7 +184,7 @@ private:
   std::map<std::string, Parameter> m_profileParameters;
 
   /// My function for peak positions
-  ThermalNeutronDtoTOFFunction_sptr m_positionFunc;
+  Functions::ThermalNeutronDtoTOFFunction_sptr m_positionFunc;
 
   /// Damping factor
   double m_dampingFactor;
@@ -226,6 +227,7 @@ double calculateFunctionChiSquare(const std::vector<double> &modelY,
                                   const std::vector<double> &dataY,
                                   const std::vector<double> &dataE);
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SplineBackground.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineBackground.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SplineBackground.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineBackground.h
index 53d877e613b3670c049e7683fa8f5c8c83114ca1..9aa91c96228c809036a56bac61cf5da9e9e01a36 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SplineBackground.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineBackground.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** SplineBackground
 
@@ -61,6 +62,7 @@ private:
   void exec();
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SplineInterpolation.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineInterpolation.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SplineInterpolation.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineInterpolation.h
index b75259124c0cd45b1a657154a0b15d23a784cbe2..fbb797729d6c07784b7d6fa7efed53a4bfec8d2f 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SplineInterpolation.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineInterpolation.h
@@ -3,10 +3,11 @@
 
 #include "MantidKernel/System.h"
 #include "MantidAPI/Algorithm.h"
-#include "MantidCurveFitting/CubicSpline.h"
+#include "MantidCurveFitting/Functions/CubicSpline.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** Takes two workspaces as input. One contain a set of points which define a
   spline,
@@ -62,7 +63,7 @@ private:
   void exec();
 
   /// CubicSpline member used to perform interpolation
-  boost::shared_ptr<CubicSpline> m_cspline;
+  boost::shared_ptr<Functions::CubicSpline> m_cspline;
 
   /// setup an output workspace using meta data from inws and taking a number of
   /// spectra
@@ -91,6 +92,7 @@ private:
                             int order) const;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SplineSmoothing.h b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineSmoothing.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SplineSmoothing.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineSmoothing.h
index 3c95fe4d0f927d458811de8854ffba1ab3ea2b70..ee17aa3dca0fb55f9ece30aee9b9fb5fc0cc8503 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SplineSmoothing.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/SplineSmoothing.h
@@ -4,10 +4,11 @@
 #include "MantidKernel/System.h"
 #include "MantidAPI/Algorithm.h"
 #include "MantidAPI/WorkspaceFactory.h"
-#include "MantidCurveFitting/BSpline.h"
+#include "MantidCurveFitting/Functions/BSpline.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /** Takes a 2D workspace and produces an output workspace containing a smoothed
   version of the data by selecting
@@ -106,7 +107,7 @@ private:
   void performAdditionalFitting(API::MatrixWorkspace_sptr ws, const int row);
 
   /// CubicSpline member used to perform smoothing
-  boost::shared_ptr<BSpline> m_cspline;
+  boost::shared_ptr<Functions::BSpline> m_cspline;
   /// pointer to the input workspace
   API::MatrixWorkspace_sptr m_inputWorkspace;
   /// pointer to the input workspace converted to point data
@@ -117,6 +118,7 @@ private:
   API::MatrixWorkspace_sptr m_outputWorkspace;
 };
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BoundaryConstraint.h b/Framework/CurveFitting/inc/MantidCurveFitting/Constraints/BoundaryConstraint.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BoundaryConstraint.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Constraints/BoundaryConstraint.h
index 2b3301fa8ea844eea8951a2583b47df936d45c83..ef798c50e1afbe87ad21d94ee77fdd088c0bfa47 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BoundaryConstraint.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Constraints/BoundaryConstraint.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Constraints {
 //----------------------------------------------------------------------
 // Forward Declaration
 //----------------------------------------------------------------------
@@ -142,6 +143,7 @@ private:
   double m_upperBound;
 };
 
+} // namespace Constraints
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncFitting.h b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncFitting.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CostFuncFitting.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncFitting.h
index 7bbc76c8bb8e07885624d8244efddb334a28d9d0..41cc8170906b0b63a589a46c417aa0fb4442a974 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncFitting.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncFitting.h
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 /** A semi-abstract class for a cost function for fitting functions.
     Implement val(), deriv(), and valAndDeriv() methods in a concrete class.
 
@@ -100,6 +101,7 @@ protected:
   mutable bool m_dirtyHessian; /// dirty hessian flag
 };
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncIgnorePosPeaks.h b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncIgnorePosPeaks.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CostFuncIgnorePosPeaks.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncIgnorePosPeaks.h
index ffef9d6666730776e3cc435975acfafa650cf799..2a38310ecf35d42be1781cc744f35b342ffdfbb6 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncIgnorePosPeaks.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncIgnorePosPeaks.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 /** Cost function which allows positive peaks to be ignored and is suitable
     for e.g. fitting the background
 
@@ -61,6 +62,7 @@ private:
   const std::string m_name;
 };
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncLeastSquares.h b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CostFuncLeastSquares.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h
index be05dae8779b0db76f5cd7ba9060ae7850cb4e99..9478d2ab3be0dd7fc4ee4b47e5d147f139741c96 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncLeastSquares.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h
@@ -4,7 +4,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncFitting.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
 #include "MantidCurveFitting/GSLMatrix.h"
 #include "MantidCurveFitting/GSLVector.h"
 
@@ -13,6 +13,7 @@ namespace CurveFitting {
 class SeqDomain;
 class ParDomain;
 
+namespace CostFunctions {
 /** Cost function for least squares
 
     @author Anders Markvardsen, ISIS, RAL
@@ -101,12 +102,13 @@ protected:
   mutable double m_pushedValue;
   mutable GSLVector m_pushedParams;
 
-  friend class SeqDomain;
-  friend class ParDomain;
+  friend class CurveFitting::SeqDomain;
+  friend class CurveFitting::ParDomain;
 
   double m_factor;
 };
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncRwp.h b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncRwp.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CostFuncRwp.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncRwp.h
index a58da7c674ccf477b2ff508921c8a133308e392d..4c5b04e99c27543c1150e0f06421ed9d57d418fb 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncRwp.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncRwp.h
@@ -4,7 +4,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 #include "MantidCurveFitting/GSLMatrix.h"
 #include "MantidCurveFitting/GSLVector.h"
 
@@ -16,6 +16,8 @@ namespace CurveFitting {
 class SeqDomain;
 class ParDomain;
 
+namespace CostFunctions {
+
 /** Cost function for Rwp = (sum_i (( obs_i - cal_i )/sigma_i)**2 ) / (sum_i
    (obs_i/sigma_i)**2)
 
@@ -68,6 +70,7 @@ private:
   double calSqrtW(API::FunctionValues_sptr values) const;
 };
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncUnweightedLeastSquares.h b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CostFuncUnweightedLeastSquares.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h
index 17fc016bb426d6e2c37c534c89f796124d3bb7a5..85f979e8876e3206414b27f2a3173d1c7f0f20bf 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CostFuncUnweightedLeastSquares.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h
@@ -2,10 +2,11 @@
 #define MANTID_CURVEFITTING_COSTFUNCUNWEIGHTEDLEASTSQUARES_H_
 
 #include "MantidKernel/System.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 
 /** @class CostFuncUnweightedLeastSquares
  *
@@ -53,6 +54,7 @@ protected:
   double getResidualVariance() const;
 };
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BFGS_Minimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BFGS_Minimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h
index dbafd43e1a5452b7c3d9efdf9a74de52dbb6a3aa..137e3f2f08b1f4fd5f36f13a801eda26cb229bf1 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BFGS_Minimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h
@@ -5,10 +5,11 @@
 // Includes
 //----------------------------------------------------------------------
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/DerivMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/DerivMinimizer.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing Broyden-Fletcher-Goldfarb-Shanno (BFGS) algorithm
     by wrapping the IFuncMinimizer interface around the GSL implementation of
    this algorithm.
@@ -52,6 +53,7 @@ protected:
   static Kernel::Logger &g_log;
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DampingMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DampingMinimizer.h
similarity index 92%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DampingMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DampingMinimizer.h
index 4c8be89a8f28e194246585da2ad52351ad28abb4..a09325d17a0556d65ff8fe3c8f925ccfd394c18d 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DampingMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DampingMinimizer.h
@@ -10,8 +10,10 @@
 
 namespace Mantid {
 namespace CurveFitting {
-
+namespace CostFunctions {
 class CostFuncLeastSquares;
+} // namespace CostFunctions
+namespace FuncMinimisers {
 
 /**
     Implements a least squares minimization algorithm with damping.
@@ -56,13 +58,13 @@ public:
 
 private:
   /// Pointer to the cost function. Must be the least squares.
-  boost::shared_ptr<CostFuncLeastSquares> m_leastSquares;
+  boost::shared_ptr<CostFunctions::CostFuncLeastSquares> m_leastSquares;
   /// Relative tolerance.
   double m_relTol;
   /// The damping mu parameter in the Levenberg-Marquardt method.
   // double m_damping;
 };
-
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DerivMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DerivMinimizer.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DerivMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DerivMinimizer.h
index f894626253e6974c47a3a924af6c6d0923f3c67a..2da8b40ba41cf1e55c5a3a9fe27ba0822cc7e428 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DerivMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/DerivMinimizer.h
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** A wrapper around the GSL functions implementing a minimizer using
    derivatives.
     Concrete classes must implement the getGSLMinimizerType() method.
@@ -94,6 +95,7 @@ private:
   void initGSLMMin();
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/FABADAMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h
similarity index 93%
rename from Framework/CurveFitting/inc/MantidCurveFitting/FABADAMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h
index 751e195e233676fd8a9f8be9af86c8a123189af1..c2c5b5ebfb75a997919a933003aff9b3beee60ea 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/FABADAMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h
@@ -10,7 +10,16 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
+/// Forward Declaration
 class CostFuncLeastSquares;
+}
+}
+}
+
+namespace Mantid {
+namespace CurveFitting {
+namespace FuncMinimisers {
 
 /** FABADA : TODO: DESCRIPTION
 
@@ -56,7 +65,7 @@ private:
   /// Pointer to the cost function. Must be the least squares.
   /// Intentar encontrar una manera de sacar aqui el numero de parametros  que
   /// no sea necesaria la cost function
-  boost::shared_ptr<CostFuncLeastSquares> m_leastSquares;
+  boost::shared_ptr<CostFunctions::CostFuncLeastSquares> m_leastSquares;
   /// The number of iterations done.
   size_t m_counter;
   ///
@@ -88,6 +97,8 @@ private:
   /// Maximum number of iterations
   size_t m_max_iter;
 };
+
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/FRConjugateGradientMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/FRConjugateGradientMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h
index cbe9ac8d9d7f1af2789f5a2aa0a1377a517d15ed..683b3a8c3b0521ab38b2be2e29d0831b84f844a3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/FRConjugateGradientMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h
@@ -5,10 +5,11 @@
 // Includes
 //----------------------------------------------------------------------
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/DerivMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/DerivMinimizer.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing Fletcher-Reeves flavour of the conjugate gradient algorithm
     by wrapping the IFuncMinimizer interface around the GSL implementation of
    this algorithm.
@@ -51,6 +52,7 @@ protected:
   virtual const gsl_multimin_fdfminimizer_type *getGSLMinimizerType();
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMDMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h
similarity index 93%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMDMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h
index 5d39606ed1f013a8041f9abb79ea943fe2c3f2c1..139b82aff0229675b5193519173860073e388008 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMDMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h
@@ -10,9 +10,11 @@
 
 namespace Mantid {
 namespace CurveFitting {
-
+namespace CostFunctions {
 class CostFuncLeastSquares;
+} // namespace CostFunctions
 
+namespace FuncMinimisers {
 /** Implementing Levenberg-Marquardt algorithm. Uses the normal system calculate
     the corrections to the parameters. Expects a cost function that can evaluate
     the value, the derivatives and the hessian matrix.
@@ -57,7 +59,7 @@ public:
 
 private:
   /// Pointer to the cost function. Must be the least squares.
-  boost::shared_ptr<CostFuncLeastSquares> m_leastSquares;
+  boost::shared_ptr<CostFunctions::CostFuncLeastSquares> m_leastSquares;
   /// The tau parameter in the Levenberg-Marquardt method.
   double m_tau;
   /// The damping mu parameter in the Levenberg-Marquardt method.
@@ -71,6 +73,7 @@ private:
   std::vector<double> m_D;
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h
index a5af8ed98820db924555df0d58ef32974ad5c18c..e2c786adb32c18a7f1b32bb90f7d2813405df4c3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LevenbergMarquardtMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h
@@ -11,6 +11,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing Levenberg-Marquardt by wrapping the IFuncMinimizer interface
     around the GSL implementation of this algorithm.
 
@@ -79,6 +80,7 @@ private:
   double m_relError;
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PRConjugateGradientMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PRConjugateGradientMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h
index 80d5feaf207f6260087c35404fed96b97c6de952..99f37e47c2b7f46d35eb3fb2e36c7b0b9040e846 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PRConjugateGradientMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h
@@ -5,10 +5,11 @@
 // Includes
 //----------------------------------------------------------------------
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/DerivMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/DerivMinimizer.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing Polak-Ribiere flavour of the conjugate gradient algorithm
     by wrapping the IFuncMinimizer interface around the GSL implementation of
    this algorithm.
@@ -49,6 +50,7 @@ protected:
   virtual const gsl_multimin_fdfminimizer_type *getGSLMinimizerType();
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SimplexMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SimplexMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h
index 5ca099ae2b281a22b1d70aecade9fea5fb4a732f..14e637fd956804ea8580a0ebd7a6cc656b9c1942 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SimplexMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing Simplex by wrapping the IFuncMinimizer interface
     around the GSL implementation of this algorithm.
 
@@ -87,6 +88,7 @@ private:
   gsl_multimin_function gslContainer;
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SteepestDescentMinimizer.h b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SteepestDescentMinimizer.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SteepestDescentMinimizer.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SteepestDescentMinimizer.h
index 7e319e65c8427794ee1d1ee9eefac848983f0e82..a251a9eae3b7ec077233b9ce66b96812aead1e81 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SteepestDescentMinimizer.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/FuncMinimizers/SteepestDescentMinimizer.h
@@ -5,10 +5,11 @@
 // Includes
 //----------------------------------------------------------------------
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/DerivMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/DerivMinimizer.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 /** Implementing the steepest descent algorithm
     by wrapping the IFuncMinimizer interface around the GSL implementation of
    this algorithm.
@@ -51,6 +52,7 @@ protected:
   static Kernel::Logger &g_log;
 };
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Abragam.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Abragam.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Abragam.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Abragam.h
index 426c69d337e2ee0bc9964f7d04a401f4aca6fcaf..0bfcade021dcda28e4a3e875a4fcb048d8bc1c48 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Abragam.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Abragam.h
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Abragam fitting function for muon scientists
 
@@ -64,6 +65,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BSpline.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BSpline.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BSpline.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/BSpline.h
index a2a59dad6354494d31ddefa4cb73735db5244192..b45302749aaad9b49e7ca5082d9f4dbe64c7afc5 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BSpline.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BSpline.h
@@ -4,7 +4,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 #include <boost/shared_ptr.hpp>
 #include <gsl/gsl_errno.h>
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 
 A wrapper around GSL functions implementing a B-spline.
@@ -75,6 +76,7 @@ private:
       m_bsplineDerivWorkspace;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BackToBackExponential.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackToBackExponential.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BackToBackExponential.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackToBackExponential.h
index 103d8679b413e23627156e4151a577b52331b48b..83910c281dbe962f7dcfabaad1d381c90f90ffcf 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BackToBackExponential.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackToBackExponential.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide BackToBackExponential peak shape function interface to IPeakFunction.
 That is the function:
@@ -87,6 +88,7 @@ protected:
 
 typedef boost::shared_ptr<BackToBackExponential> BackToBackExponential_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BackgroundFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackgroundFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BackgroundFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackgroundFunction.h
index 46f9f2f25c32946dd9b517e80a2f24b58f67ecff..fc373fc1331bff0219d8f2d477db154ef6c9c97b 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BackgroundFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BackgroundFunction.h
@@ -13,6 +13,7 @@ class Parser;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 A background function. Functions that are intended to be used as backgrounds
 should inherit from this class to enable certain features. E.g. querying
@@ -74,6 +75,7 @@ public:
 
 typedef boost::shared_ptr<BackgroundFunction> BackgroundFunction_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/BivariateNormal.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BivariateNormal.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/BivariateNormal.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/BivariateNormal.h
index 5404e669d06fa3f1f9909bf8350dfd6d46f01481..59fd0db97239581ebaa53d4a3a430e70b2536390 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/BivariateNormal.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/BivariateNormal.h
@@ -4,15 +4,16 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/IFunctionMW.h"
 #include "MantidAPI/IFunction1D.h"
 #include "MantidAPI/ParamFunction.h"
 #include "MantidKernel/cow_ptr.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   * Provide peak shape function interface a Peak shape on one time slice of a
@@ -176,6 +177,7 @@ protected:
       expCoeffxy; //<Other common values used in calculating values and
                   //<derivatives
 };
+} // namespace Functions
 }
 }
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Bk2BkExpConvPV.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Bk2BkExpConvPV.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Bk2BkExpConvPV.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Bk2BkExpConvPV.h
index f7511c3810a8eda9e2cdd4fda957c04f9d581253..be7ed03f4ad95d00407a788af69241ca74bbe386 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Bk2BkExpConvPV.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Bk2BkExpConvPV.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** Bk2BkExpConvPV : Peak profile as tback-to-back exponential convoluted with
   pseudo-Voigt.
@@ -92,6 +93,7 @@ private:
 
 typedef boost::shared_ptr<Bk2BkExpConvPV> Bk2BkExpConvPV_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ChebfunBase.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ChebfunBase.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ChebfunBase.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ChebfunBase.h
index 37eafa709eb65aa33d783d805ca48f5ed320a53d..92dd84b3ddf1deda279dc2435e33092d12c71afa 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ChebfunBase.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ChebfunBase.h
@@ -1,8 +1,8 @@
 #ifndef MANTID_CURVEFITTING_CHEBFUNBASE_H
 #define MANTID_CURVEFITTING_CHEBFUNBASE_H
 
-#include "DllConfig.h"
-#include "GSLMatrix.h"
+#include "MantidCurveFitting/DllConfig.h"
+#include "MantidCurveFitting/GSLMatrix.h"
 
 #include <boost/shared_ptr.hpp>
 #include <vector>
@@ -15,6 +15,7 @@ class IFunction;
 }
 
 namespace CurveFitting {
+namespace Functions {
 
 /// Type of the approximated function
 typedef std::function<double(double)> ChebfunFunctionType;
@@ -213,6 +214,7 @@ boost::shared_ptr<ChebfunBase> ChebfunBase::bestFitAnyTolerance(
   return ChebfunBase_sptr();
 }
 
+} // namespace Functions
 } // CurveFitting
 } // Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Chebyshev.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Chebyshev.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Chebyshev.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Chebyshev.h
index 100a00197e1a218cf4d7016a7c45d16e38430f72..0b4209636d5883ea7112815e5e7d0e2369da0144 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Chebyshev.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Chebyshev.h
@@ -4,11 +4,12 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include <valarray>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Implements Chebyshev polynomial expansion.
 
@@ -72,6 +73,7 @@ private:
 
 typedef boost::shared_ptr<Chebyshev> Chebyshev_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonPeakProfile.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonPeakProfile.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ComptonPeakProfile.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonPeakProfile.h
index 22d9514f8f6749ea7e5a5d9d6153613673be7005..a3a8d2dfb1853fa9ef4fa58a698c0702fc809f7d 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonPeakProfile.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonPeakProfile.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
   This implements a resolution function for fitting a single mass in a compton
   scattering spectrum. The
@@ -81,6 +82,7 @@ private:
   double m_hwhmLorentz;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonProfile.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonProfile.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ComptonProfile.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonProfile.h
index c533219940a0172149577792504bae5ea9c88330..58f9e65ab1ff2aaad49b01da28636e012b8158dd 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonProfile.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonProfile.h
@@ -2,18 +2,21 @@
 #define MANTID_CURVEFITTING_COMPTONPROFILE_H_
 
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/VesuvioResolution.h"
+#include "MantidCurveFitting/Functions/VesuvioResolution.h"
 #include "MantidAPI/IPeakFunction.h"
 #include "MantidAPI/MatrixWorkspace_fwd.h"
 #include "MantidAPI/ParamFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 //---------------------------------------------------------------------------
 // Forward declarations
 //---------------------------------------------------------------------------
 struct DetectorParams;
+}
 
+namespace Functions {
 /**
   This class serves as a base-class for ComptonProfile type functions. @see
   GaussianComptonProfile, GramCharlierComptonProfile
@@ -59,13 +62,14 @@ public:
 
   /// Pre-calculate the Y-space values with specified resolution parameters
   void cacheYSpaceValues(const std::vector<double> &tseconds,
-                         const bool isHistogram, const DetectorParams &detpar,
+                         const bool isHistogram,
+                         const Algorithms::DetectorParams &detpar,
                          const ResolutionParams &respar);
 
   /// Pre-calculate the Y-space values
   virtual void cacheYSpaceValues(const std::vector<double> &tseconds,
                                  const bool isHistogram,
-                                 const DetectorParams &detpar);
+                                 const Algorithms::DetectorParams &detpar);
   /// Turn off logger
   void disableLogging() { m_log.setEnabled(false); }
   ///@}
@@ -133,6 +137,7 @@ protected:
   ///@}
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonScatteringCountRate.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonScatteringCountRate.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ComptonScatteringCountRate.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonScatteringCountRate.h
index 1b3c42cfd9cf84997e60c8a747676fe23bfe542f..a34ee169656166cbcd099378c4ca6a7214c248cc 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ComptonScatteringCountRate.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ComptonScatteringCountRate.h
@@ -2,12 +2,13 @@
 #define MANTID_CURVEFITTING_COMPTONSCATTERINGCOUNTRATE_H_
 
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/ComptonProfile.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
 #include "MantidKernel/ClassMacros.h"
 #include "MantidKernel/Matrix.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   Implements a specialized function that encapsulates the combination of
@@ -92,6 +93,7 @@ private:
   std::vector<double> m_dataErrorRatio;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Convolution.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Convolution.h
similarity index 99%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Convolution.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Convolution.h
index 499d426d8bbcccc70ac5f21e8e8c68a572c651b9..b1e5791269a82fcdc5fbef17b757ab8b22b24a85 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Convolution.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Convolution.h
@@ -11,6 +11,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Performes convolution of two functions.
 
@@ -151,6 +152,7 @@ private:
   mutable std::vector<double> m_resolution;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/CubicSpline.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/CubicSpline.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/CubicSpline.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/CubicSpline.h
index 0ad0f34ccc00de17b46e5f28653f5e07a34d4ccc..3dbaa2c4dc2cbae2236fac99393de0856a271c1d 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/CubicSpline.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/CubicSpline.h
@@ -4,7 +4,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 #include <boost/scoped_array.hpp>
 #include <gsl/gsl_errno.h>
@@ -13,6 +13,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 
 A wrapper around GSL functions implementing cubic spline interpolation.
@@ -117,6 +118,7 @@ private:
 typedef boost::shared_ptr<CubicSpline> CubicSpline_sptr;
 typedef const boost::shared_ptr<CubicSpline> CubicSpline_const_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DeltaFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DeltaFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DeltaFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/DeltaFunction.h
index 1f0b682f088492ab13765438ac147bfd7f53aecb..9f98b9cafbcffd02ce3fa9281323ae05918054c5 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DeltaFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DeltaFunction.h
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 
 Delta function. Makes sence in Convolution only.
@@ -78,6 +79,7 @@ protected:
   }
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DiffRotDiscreteCircle.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffRotDiscreteCircle.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DiffRotDiscreteCircle.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffRotDiscreteCircle.h
index 8b1c38f194acfe816aa5e15788132eb720c86413..0157a963217c46f6cc209ebef4c09d2e9e195b5d 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DiffRotDiscreteCircle.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffRotDiscreteCircle.h
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 @author Jose Borreguero, NScD
 @date December 02 2013
@@ -125,6 +126,7 @@ private:
   boost::shared_ptr<InelasticDiffRotDiscreteCircle> m_inelastic;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DiffSphere.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffSphere.h
similarity index 99%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DiffSphere.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffSphere.h
index 7db3b4e805332c1280f709fc4f2da9b277e82a66..b7eeb4b57e017333dd7ac416b11752691c7693f2 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DiffSphere.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DiffSphere.h
@@ -14,6 +14,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 @author Jose Borreguero, NScD
 @date 11/14/2011
@@ -172,6 +173,7 @@ private:
       m_inelastic; // inelastic intensity of the DiffSphere structure factor
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/DynamicKuboToyabe.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DynamicKuboToyabe.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/DynamicKuboToyabe.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/DynamicKuboToyabe.h
index 7b24a53770f71e84d18c280f07f50843b2764987..9865dd6b967b0f8104c7d4c385ac8fe4a9265fb9 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/DynamicKuboToyabe.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/DynamicKuboToyabe.h
@@ -11,6 +11,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
  Provide Dynamic Kubo Toyabe function interface to IFunction1D for muon
  scientists.
@@ -87,6 +88,7 @@ private:
   double m_minEps, m_maxEps;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/EndErfc.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/EndErfc.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/EndErfc.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/EndErfc.h
index 490ab7dba3c2a0c120b0f083e356e2437ebca4f7..1519739ca40c79dbaa5616264e928a7407fed088 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/EndErfc.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/EndErfc.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Errore function erfc()for calibrating the end of a tube.
 
@@ -57,6 +58,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecay.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecay.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ExpDecay.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecay.h
index 60ccb117530cc9b2da7b49617b9eb27e012aa7e6..45732a7d1124801438877998d3b7e6b93e8df03a 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecay.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecay.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide exponential decay function: h*exp(-(x-c)/t)
 
@@ -56,6 +57,7 @@ protected:
                                const size_t nData);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayMuon.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayMuon.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayMuon.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayMuon.h
index b12e4e30a1224464520fb86898ae1df7dda76562..7a42e6a9aaf3058eda3bf8a9ab9877feb10150c4 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayMuon.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayMuon.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide exponential decay function: h*exp(-lambda.x)
 
@@ -59,6 +60,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayOsc.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayOsc.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayOsc.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayOsc.h
index 9f896924044cb2578fda36b0e6a93e150e60d760..07d3ad4d03a47a66ed337c142a60e9cf21012683 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ExpDecayOsc.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ExpDecayOsc.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide oscillating exponential decay function:
 h*exp(-lambda.x)*(cos(2pi*f*x+phi))
@@ -61,6 +62,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/FlatBackground.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/FlatBackground.h
similarity index 93%
rename from Framework/CurveFitting/inc/MantidCurveFitting/FlatBackground.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/FlatBackground.h
index 1de1aba3bd9ee7a9c61ee04dd1151e4e9381fa3b..cb1add3374562c945fe024946ec3079fdb382742 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/FlatBackground.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/FlatBackground.h
@@ -1,11 +1,12 @@
 #ifndef MANTID_CURVEFITTING_FLATBACKGROUND_H_
 #define MANTID_CURVEFITTING_FLATBACKGROUND_H_
 
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include "MantidKernel/System.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** FlatBackground : TODO: DESCRIPTION
 
@@ -47,6 +48,7 @@ private:
   void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/FullprofPolynomial.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/FullprofPolynomial.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/FullprofPolynomial.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/FullprofPolynomial.h
index 114437e08a4a6e6aee0465c1d92866fd9822b91e..8a5f52c3953d950f5b62cf7a0b981b4f84c2e7ad 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/FullprofPolynomial.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/FullprofPolynomial.h
@@ -2,10 +2,11 @@
 #define MANTID_CURVEFITTING_FULLPROFPOLYNOMIAL_H_
 
 #include "MantidKernel/System.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** FullprofPolynomial : Polynomial background defined in Fullprof
 
@@ -75,6 +76,7 @@ private:
 
 typedef boost::shared_ptr<FullprofPolynomial> FullprofPolynomial_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/GausDecay.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausDecay.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/GausDecay.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausDecay.h
index ac17d7122184a9f52292a9c78d746ff4437fde4f..053d65163a9f60a0e561be628579b227d1035913 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/GausDecay.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausDecay.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide gaussian decay function: A*exp(-(sigma.x)^2))
 
@@ -59,6 +60,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/GausOsc.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausOsc.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/GausOsc.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausOsc.h
index a80e5df087e7bc3e06fb5704268eab30bfc6731d..b54279a77ada4db8cfb55bbf53a1d1fe9b482049 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/GausOsc.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GausOsc.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide gaussian decay function: A*exp(-(sigma.x)^2))
 
@@ -59,6 +60,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Gaussian.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Gaussian.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Gaussian.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Gaussian.h
index da8d2b4914c7e01e33c5ef83cd1e7e2944a40f29..c56f8618d54c3feca5e7bbc3937ae6456b771c58 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Gaussian.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Gaussian.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide gaussian peak shape function interface to IPeakFunction.
 I.e. the function: Height*exp(-0.5*((x-PeakCentre)/Sigma)^2).
@@ -79,6 +80,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/GaussianComptonProfile.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GaussianComptonProfile.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/GaussianComptonProfile.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/GaussianComptonProfile.h
index 4030a64cac4039f4307b3b07fd9ed045985d06dc..60c6ffe5f6266ade00fef84d9785ab66e12588ea 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/GaussianComptonProfile.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GaussianComptonProfile.h
@@ -2,10 +2,11 @@
 #define MANTID_CURVEFITTING_GAUSSIANCOMPTONPROFILE_H_
 
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/ComptonProfile.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   Implements a function to calculate the Compton profile of a nucleus using a
@@ -64,6 +65,7 @@ private:
                    const double amplitude) const;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/GramCharlierComptonProfile.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GramCharlierComptonProfile.h
similarity index 94%
rename from Framework/CurveFitting/inc/MantidCurveFitting/GramCharlierComptonProfile.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/GramCharlierComptonProfile.h
index bc8e1b4fd01d4ac647b5c2afd8812084adbd850b..14cbb33b841dfca79fb96e8da8705c1d25da2012 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/GramCharlierComptonProfile.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/GramCharlierComptonProfile.h
@@ -2,10 +2,11 @@
 #define MANTID_CURVEFITTING_GRAMCHARLIERCOMPTONPROFILE_H_
 
 #include "MantidCurveFitting/DllConfig.h"
-#include "MantidCurveFitting/ComptonProfile.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 
   Implements a function to calculate the Compton profile of a nucleus using a
@@ -75,7 +76,8 @@ private:
                      size_t wi, double startX, double endX);
   /// Pre-calculate the Y-space values
   void cacheYSpaceValues(const std::vector<double> &tseconds,
-                         const bool isHistogram, const DetectorParams &detpar);
+                         const bool isHistogram,
+                         const Algorithms::DetectorParams &detpar);
 
   /// The active hermite coefficents
   std::vector<short> m_hermite;
@@ -95,6 +97,7 @@ private:
   bool m_userFixedFSE;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/IkedaCarpenterPV.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/IkedaCarpenterPV.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/IkedaCarpenterPV.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/IkedaCarpenterPV.h
index ecb2f57bc9166e4d8232bfdd9bc90ef2208496eb..bc8cc43f3e66a697a9e61977a4b8c037736306bb 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/IkedaCarpenterPV.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/IkedaCarpenterPV.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Ikeda-Carpenter-pseudo-Voigt peak shape function interface to
 IPeakFunction. See wiki
@@ -96,6 +97,7 @@ private:
                             double &eta) const;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LinearBackground.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/LinearBackground.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LinearBackground.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/LinearBackground.h
index 3919c08b16233c0625e92ec5e7496e8280a9ce86..e8ba0edd4443cd9bf9277159cf528a001dd62fb9 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LinearBackground.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/LinearBackground.h
@@ -4,10 +4,11 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide linear function interface to IFunction.
 I.e. the function: A0+A1*x.
@@ -61,6 +62,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LogNormal.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/LogNormal.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/LogNormal.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/LogNormal.h
index 6816b53db955c049ce4ae2e8d83230f99e43eb47..90273384e73961fbff8ab34e0fea5f01e0bb5adf 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LogNormal.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/LogNormal.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Log Normal function: h*exp(-(log(x)-t)^2 / (2*b^2) )/x
 
@@ -54,6 +55,7 @@ protected:
                                const size_t nData);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian.h
index b6b816d9d1fbd762e8d01d271bfa37ed305b06e3..132408dee74bf59f15c532d86ac917d00b2d32da 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide lorentzian peak shape function interface to IPeakFunction.
 I.e. the function: \f$ \frac{A}{\pi}( \Gamma/2((x-PeakCentre)^2+(\Gamma/2)^2)
@@ -69,6 +70,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian1D.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian1D.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian1D.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian1D.h
index 66fb65e18476ca6e7ad6bb53eb9cd19e8b8b7bc0..6211f2d053b617abcf03f5084cc31ee7966ec979 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Lorentzian1D.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Lorentzian1D.h
@@ -4,10 +4,11 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Fit1D.h"
+#include "MantidCurveFitting/Algorithms/Fit1D.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Deprecation notice: instead of using this algorithm please use the Fit algorithm
 where the Function parameter of this algorithm is used
@@ -50,7 +51,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 File change history is stored at: <https://github.com/mantidproject/mantid>
 Code Documentation is available at: <http://doxygen.mantidproject.org>
 */
-class DLLExport Lorentzian1D : public Fit1D {
+class DLLExport Lorentzian1D : public Algorithms::Fit1D {
 public:
   /// Destructor
   virtual ~Lorentzian1D(){};
@@ -80,6 +81,7 @@ private:
                      const double *xValues, const size_t nData);
 };
 
+} // namespace Functions
 } // namespace Algorithm
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/MuonFInteraction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/MuonFInteraction.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/MuonFInteraction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/MuonFInteraction.h
index 508ea9d2279cf4635302d25f6a90425c4bb7a156..f474266b5605ce12a87c96a79e392d5410ac75dc 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/MuonFInteraction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/MuonFInteraction.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Muon F Interaction fitting function
 
@@ -57,6 +58,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h
index 93933ea8871a7327b1b0ceee740fc07591c25cc5..7ddc907fdabb05231397f386d2bff50dab3e7d54 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** NeutronBk2BkExpConvPVoigt : Back-to-back exponential function convoluted
   with pseudo-voigt
@@ -128,6 +129,7 @@ private:
   mutable double m_N;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PawleyFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PawleyFunction.h
similarity index 99%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PawleyFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/PawleyFunction.h
index a9e3214fd494c581db6725e82b1b4c62cd5ca66d..a56373b31075af5abccf29966b2c68b123f557a1 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PawleyFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PawleyFunction.h
@@ -13,6 +13,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** @class PawleyParameterFunction
 
@@ -173,6 +174,7 @@ protected:
 
 typedef boost::shared_ptr<PawleyFunction> PawleyFunction_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PeakParameterFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PeakParameterFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PeakParameterFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/PeakParameterFunction.h
index 22621031ef1242d457f5d30003eb08aeec097836..e0d34610fbf5f7bd3b948b584c0691614dc68058 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PeakParameterFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PeakParameterFunction.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** PeakParameterFunction :
 
@@ -62,6 +63,7 @@ protected:
   API::IPeakFunction_sptr m_peakFunction;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Polynomial.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Polynomial.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Polynomial.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Polynomial.h
index 94cfa29b53e326a109883a9d444bfd66183698fc..fcb944652788d7d91509eb50452853cf582f13ea 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Polynomial.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Polynomial.h
@@ -2,11 +2,12 @@
 #define MANTID_CURVEFITTING_POLYNOMIAL_H_
 
 #include "MantidKernel/System.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** Polynomial : N-th polynomial background function.
 
@@ -73,6 +74,7 @@ private:
 
 typedef boost::shared_ptr<Polynomial> Polynomial_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ProcessBackground.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProcessBackground.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ProcessBackground.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProcessBackground.h
index 3b9c09886fefe4018ceac089427213d4f95f24a2..e5b8e1dd27201ed2404d63fb88e4992e592dcea6 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ProcessBackground.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProcessBackground.h
@@ -3,7 +3,7 @@
 
 #include "MantidKernel/System.h"
 #include "MantidAPI/Algorithm.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidKernel/ArrayProperty.h"
@@ -13,6 +13,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 class RemovePeaks {
 public:
@@ -141,6 +142,7 @@ private:
   void fitBackgroundFunction(std::string bkgdfunctiontype);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ProductFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ProductFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductFunction.h
index 83ca1c3239d57117d8822d75ee2ed884e5f1adc7..cef21a282322ecfe74c8250d2db5ac344b69a72f 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ProductFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductFunction.h
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Allow user to create a fit function which is the product of two or
 more other fit functions.
@@ -62,6 +63,7 @@ protected:
   virtual void init(){};
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ProductLinearExp.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductLinearExp.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ProductLinearExp.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductLinearExp.h
index b49be7f9b1dfbc992b354277ca51ef82959c2d33..2e54ad0d69c2253c092fe8008ab60508fb24dd51 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ProductLinearExp.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductLinearExp.h
@@ -7,6 +7,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ProductLinearExp : Function that evauates the product of an exponential and
   linear function.
@@ -49,6 +50,7 @@ protected:
                           const size_t nData) const;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ProductQuadraticExp.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductQuadraticExp.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ProductQuadraticExp.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductQuadraticExp.h
index 257482ed18ecc744075382591895133bad6913d8..ac047a16d192d738949c4ad1af2bc1485e970f4f 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ProductQuadraticExp.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ProductQuadraticExp.h
@@ -7,6 +7,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ProductQuadraticExp : Function that evauates the product of an exponential
   and quadratic function.
@@ -49,6 +50,7 @@ protected:
                           const size_t nData) const;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/PseudoVoigt.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PseudoVoigt.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/PseudoVoigt.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/PseudoVoigt.h
index 6c970c4b17c2b18b4f6ae5c6e8780428e36b3164..53a3f331d2bd26ced8e7eca0260cb55ed230009f 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/PseudoVoigt.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/PseudoVoigt.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** PseudoVoigt
 
@@ -71,6 +72,7 @@ protected:
   void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Quadratic.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Quadratic.h
similarity index 95%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Quadratic.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Quadratic.h
index 0e1e6f08553667bcb36cc7f9f922da615d2d5cbd..41eb1812f44767733cd18005bc0c6b2a9147a8c1 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Quadratic.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Quadratic.h
@@ -4,10 +4,11 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide quadratic function interface to IFunction.
 I.e. the function: A0+A1*x+A2*x^2
@@ -60,6 +61,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ReflectivityMulf.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ReflectivityMulf.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ReflectivityMulf.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ReflectivityMulf.h
index 0ccf77e23f6d2639013ba29334afbcaa7794d71c..b1c6fb99b986b55055e602d648be001b8ab03b76 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ReflectivityMulf.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ReflectivityMulf.h
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ReflectivityMulf : Calculate the ReflectivityMulf from a simple layer model.
 
@@ -59,6 +60,7 @@ private:
 
 typedef boost::shared_ptr<ReflectivityMulf> ReflectivityMulf_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Resolution.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Resolution.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Resolution.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Resolution.h
index fd7237629dd03edb73858578fc5fa931afc2ab55..bfb2f49bc06f0f68c352223eca731199f136b809 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Resolution.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Resolution.h
@@ -4,10 +4,11 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/TabulatedFunction.h"
+#include "MantidCurveFitting/Functions/TabulatedFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Resolution function. It is implemented in terms of TabulatedFunction but doesn't
 inherit form it.
@@ -67,6 +68,7 @@ private:
   TabulatedFunction m_fun;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SimpleChebfun.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/SimpleChebfun.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/SimpleChebfun.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/SimpleChebfun.h
index 5da29131ea0bbc5f41d67d8e7ef924dde747f6a2..e05bfbcd112c0541933de0e440b03217a2e6d67c 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SimpleChebfun.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/SimpleChebfun.h
@@ -2,10 +2,11 @@
 #define MANTID_CURVEFITTING_SIMPLECHEBFUN_H_
 
 #include "MantidKernel/System.h"
-#include "MantidCurveFitting/ChebfunBase.h"
+#include "MantidCurveFitting/Functions/ChebfunBase.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** SimpleChebfun : approximates smooth 1d functions and
   provides methods to manipulate them.
@@ -94,6 +95,7 @@ private:
   bool m_badFit;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabe.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabe.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabe.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabe.h
index b959aa5ecf47e81356d1188da75598381b6fe764..b6beff8a18a795ef96eb64ab6cc427a7f5336910 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabe.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabe.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide static Kubo Toyabe fitting function
 
@@ -57,6 +58,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h
index 143973e3c742846f82b86e3963db8aa2314f8173..0ceebf0aa2ecec4259996780b29d09d45a8dc251 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   StaticKuboToyabeTimesExpDecay fitting function
@@ -51,6 +52,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h
index 0b4d63300dcb6c717fbc06db0986a5ace4c70838..6f9370af94cadbeff4d3fa1b48fd050e2d6901d3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   StaticKuboToyabeTimesGausDecay fitting function.
@@ -51,6 +52,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/StretchExp.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExp.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/StretchExp.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExp.h
index 7f61f545b008744c2e7a173de94ea3ad86e473cc..43677513e130aeb2df4d37dcc7753d5f06b417f3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/StretchExp.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExp.h
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide Streteched Exponential fitting function: h*exp(-(x/t)^b )
 
@@ -55,6 +56,7 @@ protected:
                                const size_t nData);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/StretchExpMuon.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExpMuon.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/StretchExpMuon.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExpMuon.h
index 433965a34874a6ce489df33ee7a2d1317bd2711b..4816212d1a4a8840e2538c9e249c829f96f39e43 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/StretchExpMuon.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/StretchExpMuon.h
@@ -8,6 +8,7 @@
 #include "MantidAPI/IFunction1D.h"
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Provide stetch exponential function for Muon scientists
 
@@ -52,6 +53,7 @@ protected:
   virtual void init();
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/TabulatedFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/TabulatedFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/TabulatedFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/TabulatedFunction.h
index 2fe8d9ae5d15127e1e7f3e2687d4dfe2a3b0fcc9..a4e4812efbeb5b7ca51bc888c8f604f1af4503da 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/TabulatedFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/TabulatedFunction.h
@@ -19,6 +19,7 @@ class MatrixWorkspace;
 }
 
 namespace CurveFitting {
+namespace Functions {
 /**
 
 A function which takes its values from a file or a workspace. The values atr
@@ -124,6 +125,7 @@ private:
   mutable bool m_setupFinished;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h
index a8b2aee386cb1ee75b40be77b19b5085fd089919..5ee5b6e50b500c5dfa5e7a0c9b76294195214587 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h
@@ -7,6 +7,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ThermalNeutronBk2BkExpAlpha : Function to calculate Alpha of Bk2Bk
   Exponential function from
@@ -71,6 +72,7 @@ private:
 typedef boost::shared_ptr<ThermalNeutronBk2BkExpAlpha>
     ThermalNeutronBk2BkExpAlpha_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h
index f88f29f5001131df88a7b0030389647467642562..31e1d7efd7975e0257a0fab7d6865f37a9225fa5 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h
@@ -7,6 +7,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ThermalNeutronBk2BkExpBETA : Function to calculate Beta of Bk2Bk Exponential
   function from
@@ -71,6 +72,7 @@ private:
 typedef boost::shared_ptr<ThermalNeutronBk2BkExpBeta>
     ThermalNeutronBk2BkExpBeta_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h
similarity index 99%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h
index e36a938cb9b8f0b12cad3306ff2d0a6112d73ba2..267f3ab7819f647cbdf717fe422fcc9a1315e0a1 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ThermalNeutronBk2BkExpConvPVoigt :
     Back-to-back exponential convoluted with pseudo Voigt for thermal neutron
@@ -196,6 +197,7 @@ inline double calCubicDSpace(double a, int h, int k, int l)
 /// Integral for Gamma
 // std::complex<double> E1X(std::complex<double> z);
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h
index c4534681d1b727069a4d88299628dae824655d1e..412ea0d44021b1cacac2edfdc884cf7a9b61e604 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h
@@ -7,6 +7,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ThermalNeutronBk2BkExpSIGMA : Function to calculate Sigma of Bk2Bk
   Exponential function from
@@ -70,6 +71,7 @@ private:
 typedef boost::shared_ptr<ThermalNeutronBk2BkExpSigma>
     ThermalNeutronBk2BkExpSigma_sptr;
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronDtoTOFFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronDtoTOFFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h
index 0fef3abbf8c1175838de6a4166e51d3bc25ea1f2..8d0c4a2ed846b5bcd0b3636a287ceb33606ef2a5 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ThermalNeutronDtoTOFFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h
@@ -14,6 +14,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /** ThermalNeutronDtoTOFFunction : TODO: DESCRIPTION
 
@@ -98,6 +99,7 @@ inline double calThermalNeutronTOF(double dh, double dtt1, double dtt1t,
   return tof_h;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/UserFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/UserFunction.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction.h
index ca9c41550d92e490dab933ad1a5f55767af82f58..cd6e468fee151c7a2463f3e30729b01f0a54bcb3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/UserFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction.h
@@ -14,6 +14,7 @@ class Parser;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 A user defined function.
 
@@ -95,6 +96,7 @@ private:
   static double *AddVariable(const char *varName, void *pufun);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/UserFunction1D.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction1D.h
similarity index 97%
rename from Framework/CurveFitting/inc/MantidCurveFitting/UserFunction1D.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction1D.h
index 1c27d36a0a15df1a6b5f40eae0db12c9faefbef0..fefde7f6549aa277abcce768ea6d1d2a5f6d7a43 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/UserFunction1D.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction1D.h
@@ -4,12 +4,13 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Fit1D.h"
+#include "MantidCurveFitting/Algorithms/Fit1D.h"
 #include "MantidGeometry/muParser_Silent.h"
 #include <boost/shared_array.hpp>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 /**
 Deprecation notice: instead of using this algorithm please use the Fit algorithm
 where the Function parameter of this algorithm is used
@@ -70,7 +71,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 File change history is stored at: <https://github.com/mantidproject/mantid>
 Code Documentation is available at: <http://doxygen.mantidproject.org>
 */
-class UserFunction1D : public Fit1D {
+class UserFunction1D : public Algorithms::Fit1D {
 public:
   /// Constructor
   UserFunction1D()
@@ -121,6 +122,7 @@ private:
   boost::shared_array<double> m_tmp1;
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/VesuvioResolution.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/VesuvioResolution.h
similarity index 96%
rename from Framework/CurveFitting/inc/MantidCurveFitting/VesuvioResolution.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/VesuvioResolution.h
index 02f62fb838f4303c62d893c1d86b769f6dedb560..18576a11ca4f5a8cbb79c07d2bd034470e901cd3 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/VesuvioResolution.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/VesuvioResolution.h
@@ -8,10 +8,13 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 //---------------------------------------------------------------------------
 // Forward declarations
 //---------------------------------------------------------------------------
 struct DetectorParams;
+}
+namespace Functions {
 
 //---------------------------------------------------------------------------
 /// Simple data structure to store resolution parameter values
@@ -81,7 +84,7 @@ public:
   setMatrixWorkspace(boost::shared_ptr<const API::MatrixWorkspace> workspace,
                      size_t wi, double startX, double endX);
   /// Pre-calculate the resolution components values
-  void cacheResolutionComponents(const DetectorParams &detpar,
+  void cacheResolutionComponents(const Algorithms::DetectorParams &detpar,
                                  const ResolutionParams &respar);
   /// Turn off logger
   void disableLogging() { m_log.setEnabled(false); }
@@ -118,6 +121,7 @@ private:
   ///@}
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/Voigt.h b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Voigt.h
similarity index 98%
rename from Framework/CurveFitting/inc/MantidCurveFitting/Voigt.h
rename to Framework/CurveFitting/inc/MantidCurveFitting/Functions/Voigt.h
index 192bcb12d02833b47a6b2e1defb1d34e1f80c41f..780771239cdf771d7854ff0918fab2af18cf2ab4 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/Voigt.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/Functions/Voigt.h
@@ -6,6 +6,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
 
 /**
   Implements an analytical approximation to the Voigt function.
@@ -66,6 +67,7 @@ private:
   void setFwhm(const double value);
 };
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
 
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/GSLFunctions.h b/Framework/CurveFitting/inc/MantidCurveFitting/GSLFunctions.h
index 259599a19010f6dc76c6e803aef871e5763c01d4..bde389d04c861786ba31393bf215c6d456523b21 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/GSLFunctions.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/GSLFunctions.h
@@ -7,7 +7,7 @@
 #include <gsl/gsl_blas.h>
 #include "MantidAPI/IFunction.h"
 #include "MantidAPI/ICostFunction.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 namespace Mantid {
 namespace CurveFitting {
@@ -85,7 +85,7 @@ public:
 /// Structure to contain least squares data and used by GSL
 struct GSL_FitData {
   /// Constructor
-  GSL_FitData(boost::shared_ptr<CostFuncLeastSquares> cf);
+  GSL_FitData(boost::shared_ptr<CostFunctions::CostFuncLeastSquares> cf);
   /// Destructor
   ~GSL_FitData();
   /// number of points to be fitted (size of X, Y and sqrtWeightData arrays)
@@ -94,14 +94,14 @@ struct GSL_FitData {
   size_t p;
   /// Pointer to the function
   API::IFunction_sptr function;
-  boost::shared_ptr<CostFuncLeastSquares> costFunction;
+  boost::shared_ptr<CostFunctions::CostFuncLeastSquares> costFunction;
   /// Initial function parameters
   gsl_vector *initFuncParams;
   /// Jacobi matrix interface
   JacobianImpl1 J;
 
   // this is presently commented out in the implementation
-  // gsl_matrix *holdCalculatedJacobian; ///< cache of the claculated jacobian
+  // gsl_matrix *holdCalculatedJacobian; ///< cache of the calculated jacobian
 };
 
 int gsl_f(const gsl_vector *x, void *params, gsl_vector *f);
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/LatticeFunction.h b/Framework/CurveFitting/inc/MantidCurveFitting/LatticeFunction.h
index dda2fcf1d8358f0e60023c855a4eb5080a758447..3c8886b0b648fe6475b0312904f2987fe694581e 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/LatticeFunction.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/LatticeFunction.h
@@ -4,7 +4,7 @@
 #include "MantidKernel/System.h"
 #include "MantidAPI/ILatticeFunction.h"
 
-#include "MantidCurveFitting/PawleyFunction.h"
+#include "MantidCurveFitting/Functions/PawleyFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
@@ -61,7 +61,7 @@ protected:
   void beforeDecoratedFunctionSet(const API::IFunction_sptr &fn);
 
 private:
-  PawleyParameterFunction_sptr m_cellParameters;
+  Functions::PawleyParameterFunction_sptr m_cellParameters;
 };
 
 typedef boost::shared_ptr<LatticeFunction> LatticeFunction_sptr;
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/MultiBG.h b/Framework/CurveFitting/inc/MantidCurveFitting/MultiBG.h
deleted file mode 100644
index 506d7e7f047a3cc6dccba054d32ed6ec93e21e94..0000000000000000000000000000000000000000
--- a/Framework/CurveFitting/inc/MantidCurveFitting/MultiBG.h
+++ /dev/null
@@ -1,110 +0,0 @@
-#ifndef MANTID_CURVEFITTING_MULTIBG_H_
-#define MANTID_CURVEFITTING_MULTIBG_H_
-
-//----------------------------------------------------------------------
-// Includes
-//----------------------------------------------------------------------
-#include "MantidAPI/CompositeFunction.h"
-#include "MantidAPI/IFunctionMW.h"
-#include "MantidAPI/MatrixWorkspace_fwd.h"
-
-#ifdef _WIN32
-#pragma warning(disable : 4250)
-#endif
-
-namespace Mantid {
-
-namespace API {
-class WorkspaceGroup;
-}
-
-namespace CurveFitting {
-/** A composite function.
-
-    @author Roman Tolchenov, Tessella Support Services plc
-    @date 19/08/2011
-
-    Copyright &copy; 2009 ISIS Rutherford Appleton Laboratory, NScD Oak Ridge
-   National Laboratory & European Spallation Source
-
-    This file is part of Mantid.
-
-    Mantid is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    Mantid is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-    File change history is stored at: <https://github.com/mantidproject/mantid>.
-    Code Documentation is available at: <http://doxygen.mantidproject.org>
-*/
-class DLLExport MultiBG : public API::CompositeFunction {
-public:
-  /// Default constructor
-  MultiBG() : API::CompositeFunction() {}
-  /// Destructor
-  virtual ~MultiBG();
-
-  /* Overriden methods */
-
-  using CompositeFunction::setWorkspace;
-  virtual void setWorkspace(boost::shared_ptr<const API::Workspace>) {}
-  /// Set the workspace
-  void setWorkspace(boost::shared_ptr<const API::Workspace> ws, bool copyData);
-  void setSlicing(const std::string &slicing);
-  virtual boost::shared_ptr<const API::Workspace> getWorkspace() const {
-    return m_spectra[0].first;
-  }
-  /// Returns the function's name
-  std::string name() const { return "MultiBG"; }
-  /// Returns the function's category
-  virtual const std::string category() const { return "Background"; }
-
-  virtual void function(API::FunctionDomain &) const {}
-
-  /// Returns the size of the fitted data (number of double values returned by
-  /// the function)
-  virtual size_t dataSize() const { return m_data.size(); }
-  /// Returns a reference to the fitted data. These data are taken from the
-  /// workspace set by setWorkspace() method.
-  virtual const double *getData() const { return &m_data[0]; }
-  virtual const double *getWeights() const { return &m_weights[0]; }
-  /// Function you want to fit to.
-  void function(double *out) const;
-  /// Derivatives of function with respect to active parameters
-  void functionDeriv(API::Jacobian *out);
-  void functionDeriv(API::FunctionDomain &domain, API::Jacobian &jacobian) {
-    API::IFunction::functionDeriv(domain, jacobian);
-  }
-
-protected:
-  boost::shared_ptr<API::WorkspaceGroup> createCalculatedWorkspaceGroup(
-      const std::vector<double> &sd = std::vector<double>());
-
-  boost::shared_ptr<const API::MatrixWorkspace> m_workspace;
-
-  /// to collect different workspaces found in child functions
-  std::vector<std::pair<boost::shared_ptr<const API::MatrixWorkspace>, size_t>>
-      m_spectra;
-  /// to store function indices to workspaces: m_funIndex[i] gives vector of
-  /// indexes of m_spectra for function i
-  std::vector<std::vector<size_t>> m_funIndex;
-  /// the data vector which is a composition of all fitted spectra
-  std::vector<double> m_data;
-  /// the vector of fitting weights, one for each value in m_data
-  std::vector<double> m_weights;
-  /// offsets of particular workspaces in the m_data and m_weights arrays
-  std::vector<size_t> m_offset;
-};
-
-} // namespace CurveFitting
-} // namespace Mantid
-
-#endif /*MANTID_CURVEFITTING_MULTIBG_H_*/
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/ParDomain.h b/Framework/CurveFitting/inc/MantidCurveFitting/ParDomain.h
index bda5ec1da7cc7a89ee1a20eeb634b7eca1a483a7..c695e7c06bdb07dae06f7888c0898215e8318819 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/ParDomain.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/ParDomain.h
@@ -43,12 +43,13 @@ public:
   virtual void getDomainAndValues(size_t i, API::FunctionDomain_sptr &domain,
                                   API::FunctionValues_sptr &values) const;
   /// Calculate the value of a least squares cost function
-  virtual void leastSquaresVal(const CostFuncLeastSquares &leastSquares);
+  virtual void
+  leastSquaresVal(const CostFunctions::CostFuncLeastSquares &leastSquares);
   /// Calculate the value, first and second derivatives of a least squares cost
   /// function
-  virtual void
-  leastSquaresValDerivHessian(const CostFuncLeastSquares &leastSquares,
-                              bool evalDeriv, bool evalHessian);
+  virtual void leastSquaresValDerivHessian(
+      const CostFunctions::CostFuncLeastSquares &leastSquares, bool evalDeriv,
+      bool evalHessian);
 };
 
 } // namespace CurveFitting
diff --git a/Framework/CurveFitting/inc/MantidCurveFitting/SeqDomain.h b/Framework/CurveFitting/inc/MantidCurveFitting/SeqDomain.h
index 5e451efdf3324c3b6d47fd4e9a35f32f9550336f..7066b276f113f0883a8e7dc08376f473dfead9ec 100644
--- a/Framework/CurveFitting/inc/MantidCurveFitting/SeqDomain.h
+++ b/Framework/CurveFitting/inc/MantidCurveFitting/SeqDomain.h
@@ -8,8 +8,8 @@
 #include "MantidAPI/FunctionDomain.h"
 #include "MantidAPI/FunctionValues.h"
 #include "MantidAPI/IDomainCreator.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/CostFuncRwp.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncRwp.h"
 
 #include <stdexcept>
 #include <vector>
@@ -57,16 +57,17 @@ public:
   /// Add new domain creator
   void addCreator(API::IDomainCreator_sptr creator);
   /// Calculate the value of a least squares cost function
-  virtual void leastSquaresVal(const CostFuncLeastSquares &leastSquares);
+  virtual void
+  leastSquaresVal(const CostFunctions::CostFuncLeastSquares &leastSquares);
   /// Calculate the value, first and second derivatives of a least squares cost
   /// function
-  virtual void
-  leastSquaresValDerivHessian(const CostFuncLeastSquares &leastSquares,
-                              bool evalDeriv, bool evalHessian);
+  virtual void leastSquaresValDerivHessian(
+      const CostFunctions::CostFuncLeastSquares &leastSquares, bool evalDeriv,
+      bool evalHessian);
   /// Calculate the value of a Rwp cost function
-  void rwpVal(const CostFuncRwp &rwp);
+  void rwpVal(const CostFunctions::CostFuncRwp &rwp);
   /// Calculate the value, first and second derivatives of a RWP cost function
-  void rwpValDerivHessian(const CostFuncRwp &rwp, bool evalDeriv,
+  void rwpValDerivHessian(const CostFunctions::CostFuncRwp &rwp, bool evalDeriv,
                           bool evalHessian);
 
   /// Create an instance of SeqDomain in one of two forms: either SeqDomain for
diff --git a/Framework/CurveFitting/src/CalculateChiSquared.cpp b/Framework/CurveFitting/src/Algorithms/CalculateChiSquared.cpp
similarity index 98%
rename from Framework/CurveFitting/src/CalculateChiSquared.cpp
rename to Framework/CurveFitting/src/Algorithms/CalculateChiSquared.cpp
index 0f65e00127775c1c352363f77ef26f0476887d81..17104a9e4b23dd8223a42f8cc5647bc397ee9d10 100644
--- a/Framework/CurveFitting/src/CalculateChiSquared.cpp
+++ b/Framework/CurveFitting/src/Algorithms/CalculateChiSquared.cpp
@@ -1,16 +1,18 @@
-#include "MantidCurveFitting/CalculateChiSquared.h"
+#include "MantidCurveFitting/Algorithms/CalculateChiSquared.h"
 #include "MantidAPI/ITableWorkspace.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidAPI/Column.h"
 #include "MantidAPI/TableRow.h"
-#include "MantidCurveFitting/ChebfunBase.h"
+#include "MantidCurveFitting/Functions/ChebfunBase.h"
 #include "MantidCurveFitting/GSLJacobian.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
-using namespace Mantid::Kernel;
-using namespace Mantid::API;
+using namespace Kernel;
+using namespace API;
+using namespace Functions;
 
 // Register the algorithm into the AlgorithmFactory
 DECLARE_ALGORITHM(CalculateChiSquared)
@@ -651,5 +653,6 @@ void CalculateChiSquared::refixParameters() {
   }
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CalculateGammaBackground.cpp b/Framework/CurveFitting/src/Algorithms/CalculateGammaBackground.cpp
similarity index 95%
rename from Framework/CurveFitting/src/CalculateGammaBackground.cpp
rename to Framework/CurveFitting/src/Algorithms/CalculateGammaBackground.cpp
index d4dfeb2503d74d64dcf47b5655128fc95fc281c3..a6281e12576ea6a561de2189adf28c38e98ac59f 100644
--- a/Framework/CurveFitting/src/CalculateGammaBackground.cpp
+++ b/Framework/CurveFitting/src/Algorithms/CalculateGammaBackground.cpp
@@ -1,7 +1,7 @@
-#include "MantidCurveFitting/CalculateGammaBackground.h"
-#include "MantidCurveFitting/ComptonProfile.h"
-#include "MantidCurveFitting/ConvertToYSpace.h"
-#include "MantidCurveFitting/VesuvioResolution.h"
+#include "MantidCurveFitting/Algorithms/CalculateGammaBackground.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
+#include "MantidCurveFitting/Functions/VesuvioResolution.h"
 
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/FunctionProperty.h"
@@ -16,8 +16,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 using namespace API;
 using namespace Kernel;
+using namespace CurveFitting;
+using namespace CurveFitting::Functions;
+using namespace BOOST_FUNCTION_STD_NS;
 using namespace std;
 
 // Subscription
@@ -227,8 +231,9 @@ void CalculateGammaBackground::calculateSpectrumFromDetector(
   // -- Setup detector & resolution parameters --
   DetectorParams detPar =
       ConvertToYSpace::getDetectorParameters(m_inputWS, inputIndex);
-  ResolutionParams detRes =
-      VesuvioResolution::getResolutionParameters(m_inputWS, inputIndex);
+  CurveFitting::Functions::ResolutionParams detRes =
+      CurveFitting::Functions::VesuvioResolution::getResolutionParameters(
+          m_inputWS, inputIndex);
 
   // Compute a time of flight spectrum convolved with a Voigt resolution
   // function for each mass
@@ -254,8 +259,9 @@ void CalculateGammaBackground::calculateBackgroundFromFoils(
   // -- Setup detector & resolution parameters --
   DetectorParams detPar =
       ConvertToYSpace::getDetectorParameters(m_inputWS, inputIndex);
-  ResolutionParams detRes =
-      VesuvioResolution::getResolutionParameters(m_inputWS, inputIndex);
+  CurveFitting::Functions::ResolutionParams detRes =
+      CurveFitting::Functions::VesuvioResolution::getResolutionParameters(
+          m_inputWS, inputIndex);
 
   const size_t nxvalues = m_backgroundWS->blocksize();
   std::vector<double> foilSpectrum(nxvalues);
@@ -320,7 +326,7 @@ void CalculateGammaBackground::calculateBackgroundSingleFoil(
   // Structs to hold geometry & resolution information
   DetectorParams foilPar = detPar; // copy
   foilPar.t0 = 0.0;
-  ResolutionParams foilRes = detRes; // copy
+  CurveFitting::Functions::ResolutionParams foilRes = detRes; // copy
   foilRes.dEnGauss = foilInfo.gaussWidth;
   foilRes.dEnLorentz = foilInfo.lorentzWidth;
 
@@ -388,8 +394,9 @@ void CalculateGammaBackground::calculateTofSpectrum(
       FunctionFactory::Instance().createInitialized(m_profileFunction));
 
   for (size_t i = 0; i < m_npeaks; ++i) {
-    auto profile = boost::dynamic_pointer_cast<ComptonProfile>(
-        profileFunction->getFunction(i));
+    auto profile =
+        boost::dynamic_pointer_cast<CurveFitting::Functions::ComptonProfile>(
+            profileFunction->getFunction(i));
     profile->disableLogging();
     profile->setUpForFit();
     profile->cacheYSpaceValues(tseconds, false, detpar, respar);
@@ -422,8 +429,9 @@ void CalculateGammaBackground::retrieveInputs() {
           boost::dynamic_pointer_cast<CompositeFunction>(profileFunction)) {
     m_npeaks = composite->nFunctions();
     for (size_t i = 0; i < m_npeaks; ++i) {
-      auto single = boost::dynamic_pointer_cast<ComptonProfile>(
-          composite->getFunction(i));
+      auto single =
+          boost::dynamic_pointer_cast<CurveFitting::Functions::ComptonProfile>(
+              composite->getFunction(i));
       if (!single) {
         throw std::invalid_argument("Invalid function. Composite must contain "
                                     "only ComptonProfile functions");
@@ -595,5 +603,6 @@ std::pair<double, double> CalculateGammaBackground::calculateThetaRange(
   return std::make_pair(theta - dtheta, theta + dtheta);
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CalculateMSVesuvio.cpp b/Framework/CurveFitting/src/Algorithms/CalculateMSVesuvio.cpp
similarity index 96%
rename from Framework/CurveFitting/src/CalculateMSVesuvio.cpp
rename to Framework/CurveFitting/src/Algorithms/CalculateMSVesuvio.cpp
index 1b9aea72dde7c708db9ec294cd7861830a9b50c6..c34d6b66b7caf69f416a7fb04af6a6f341c9a881 100644
--- a/Framework/CurveFitting/src/CalculateMSVesuvio.cpp
+++ b/Framework/CurveFitting/src/Algorithms/CalculateMSVesuvio.cpp
@@ -1,11 +1,11 @@
 //-----------------------------------------------------------------------------
 // Includes
 //-----------------------------------------------------------------------------
-#include "MantidCurveFitting/CalculateMSVesuvio.h"
+#include "MantidCurveFitting/Algorithms/CalculateMSVesuvio.h"
 // Use helpers for storing detector/resolution parameters
-#include "MantidCurveFitting/ConvertToYSpace.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
 #include "MantidCurveFitting/MSVesuvioHelpers.h"
-#include "MantidCurveFitting/VesuvioResolution.h"
+#include "MantidCurveFitting/Functions/VesuvioResolution.h"
 
 #include "MantidAPI/SampleShapeValidator.h"
 #include "MantidAPI/WorkspaceValidators.h"
@@ -25,8 +25,11 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 using namespace API;
 using namespace Kernel;
+using namespace CurveFitting;
+using namespace CurveFitting::Functions;
 using Geometry::Link;
 using Geometry::ParameterMap;
 using Geometry::Track;
@@ -137,7 +140,8 @@ void CalculateMSVesuvio::exec() {
   MatrixWorkspace_sptr multsc = WorkspaceFactory::Instance().create(m_inputWS);
 
   // Initialize random number generator
-  m_randgen = new MSVesuvioHelper::RandomNumberGenerator(getProperty("Seed"));
+  m_randgen = new CurveFitting::MSVesuvioHelper::RandomNumberGenerator(
+      getProperty("Seed"));
 
   // Setup progress
   const size_t nhist = m_inputWS->getNumberHistograms();
@@ -319,11 +323,11 @@ void CalculateMSVesuvio::calculateMS(const size_t wsIndex,
   DetectorParams detpar =
       ConvertToYSpace::getDetectorParameters(m_inputWS, wsIndex);
   detpar.t0 *= 1e6; // t0 in microseconds here
-  ResolutionParams respar =
-      VesuvioResolution::getResolutionParameters(m_inputWS, wsIndex);
+  Functions::ResolutionParams respar =
+      Functions::VesuvioResolution::getResolutionParameters(m_inputWS, wsIndex);
 
   // Final counts averaged over all simulations
-  MSVesuvioHelper::SimulationAggregator accumulator(m_nruns);
+  CurveFitting::MSVesuvioHelper::SimulationAggregator accumulator(m_nruns);
   for (size_t i = 0; i < m_nruns; ++i) {
     m_progress->report("MS calculation: idx=" +
                        boost::lexical_cast<std::string>(wsIndex) + ", run=" +
@@ -338,7 +342,8 @@ void CalculateMSVesuvio::calculateMS(const size_t wsIndex,
   }
 
   // Average over all runs and assign to output workspaces
-  MSVesuvioHelper::SimulationWithErrors avgCounts = accumulator.average();
+  CurveFitting::MSVesuvioHelper::SimulationWithErrors avgCounts =
+      accumulator.average();
   avgCounts.normalise();
   assignToOutput(avgCounts, totalsc, multsc);
 }
@@ -354,7 +359,7 @@ void CalculateMSVesuvio::calculateMS(const size_t wsIndex,
  */
 void CalculateMSVesuvio::simulate(
     const DetectorParams &detpar, const ResolutionParams &respar,
-    MSVesuvioHelper::Simulation &simulCounts) const {
+    CurveFitting::MSVesuvioHelper::Simulation &simulCounts) const {
   for (size_t i = 0; i < m_nevents; ++i) {
     calculateCounts(detpar, respar, simulCounts);
   }
@@ -369,7 +374,7 @@ void CalculateMSVesuvio::simulate(
  * scattering contribution
  */
 void CalculateMSVesuvio::assignToOutput(
-    const MSVesuvioHelper::SimulationWithErrors &avgCounts,
+    const CurveFitting::MSVesuvioHelper::SimulationWithErrors &avgCounts,
     API::ISpectrum &totalsc, API::ISpectrum &multsc) const {
   // Sum up all multiple scatter events
   auto &msscatY = multsc.dataY();
@@ -404,7 +409,7 @@ void CalculateMSVesuvio::assignToOutput(
  */
 double CalculateMSVesuvio::calculateCounts(
     const DetectorParams &detpar, const ResolutionParams &respar,
-    MSVesuvioHelper::Simulation &simulation) const {
+    CurveFitting::MSVesuvioHelper::Simulation &simulation) const {
   double weightSum(0.0);
 
   // moderator coord in lab frame
@@ -785,13 +790,14 @@ double CalculateMSVesuvio::generateE1(const double angle, const double e1nom,
   const double randv = m_randgen->flat();
   if (e1nom < 5000.0) {
     if (angle > 90.0)
-      return MSVesuvioHelper::finalEnergyAuDD(randv);
+      return CurveFitting::MSVesuvioHelper::finalEnergyAuDD(randv);
     else
-      return MSVesuvioHelper::finalEnergyAuYap(randv);
+      return CurveFitting::MSVesuvioHelper::finalEnergyAuYap(randv);
   } else {
-    return MSVesuvioHelper::finalEnergyUranium(randv);
+    return CurveFitting::MSVesuvioHelper::finalEnergyUranium(randv);
   }
 }
 
 } // namespace Algorithms
+} // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ConvertToYSpace.cpp b/Framework/CurveFitting/src/Algorithms/ConvertToYSpace.cpp
similarity index 98%
rename from Framework/CurveFitting/src/ConvertToYSpace.cpp
rename to Framework/CurveFitting/src/Algorithms/ConvertToYSpace.cpp
index e7c099c6f5d44cb04c4c958dc3115f5c79776928..1124ff0504e39bf341dc6e2d45f958ec507eeda8 100644
--- a/Framework/CurveFitting/src/ConvertToYSpace.cpp
+++ b/Framework/CurveFitting/src/Algorithms/ConvertToYSpace.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ConvertToYSpace.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
 
 #include "MantidAPI/WorkspaceValidators.h"
 #include "MantidGeometry/Instrument/DetectorGroup.h"
@@ -8,6 +8,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 // Register the algorithm into the AlgorithmFactory
 DECLARE_ALGORITHM(ConvertToYSpace)
@@ -299,5 +300,6 @@ void ConvertToYSpace::cacheInstrumentGeometry() {
   m_samplePos = sample->getPos();
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ConvolveWorkspaces.cpp b/Framework/CurveFitting/src/Algorithms/ConvolveWorkspaces.cpp
similarity index 92%
rename from Framework/CurveFitting/src/ConvolveWorkspaces.cpp
rename to Framework/CurveFitting/src/Algorithms/ConvolveWorkspaces.cpp
index c8bc4034617b52b04c993398b9051a33012d4ca1..860d527201a1ef0c1501070ca0fb35f7b680b631 100644
--- a/Framework/CurveFitting/src/ConvolveWorkspaces.cpp
+++ b/Framework/CurveFitting/src/Algorithms/ConvolveWorkspaces.cpp
@@ -1,9 +1,9 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/ConvolveWorkspaces.h"
-#include "MantidCurveFitting/Convolution.h"
-#include "MantidCurveFitting/TabulatedFunction.h"
+#include "MantidCurveFitting/Algorithms/ConvolveWorkspaces.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
+#include "MantidCurveFitting/Functions/TabulatedFunction.h"
 #include <sstream>
 #include <gsl/gsl_errno.h>
 #include <gsl/gsl_fft_real.h>
@@ -11,6 +11,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 // Register the algorithm into the AlgorithmFactory
 DECLARE_ALGORITHM(ConvolveWorkspaces)
@@ -25,6 +26,7 @@ using namespace Kernel;
 using namespace API;
 using namespace DataObjects;
 using namespace Geometry;
+using namespace Functions;
 
 void ConvolveWorkspaces::init() {
   declareProperty(
@@ -96,4 +98,5 @@ void ConvolveWorkspaces::exec() {
 }
 
 } // namespace Algorithms
+} // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/EstimatePeakErrors.cpp b/Framework/CurveFitting/src/Algorithms/EstimatePeakErrors.cpp
similarity index 97%
rename from Framework/CurveFitting/src/EstimatePeakErrors.cpp
rename to Framework/CurveFitting/src/Algorithms/EstimatePeakErrors.cpp
index f9f0903ea3654a519c2d13286627ca44b6275f50..3990ef3fbabf9c2d809877eac4c9ca43622d12b0 100644
--- a/Framework/CurveFitting/src/EstimatePeakErrors.cpp
+++ b/Framework/CurveFitting/src/Algorithms/EstimatePeakErrors.cpp
@@ -1,6 +1,6 @@
-#include "MantidCurveFitting/EstimatePeakErrors.h"
+#include "MantidCurveFitting/Algorithms/EstimatePeakErrors.h"
 #include "MantidCurveFitting/GSLMatrix.h"
-#include "MantidCurveFitting/PeakParameterFunction.h"
+#include "MantidCurveFitting/Functions/PeakParameterFunction.h"
 
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/FunctionProperty.h"
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 using namespace API;
 using namespace Kernel;
 using namespace std;
@@ -164,5 +165,6 @@ void EstimatePeakErrors::exec() {
   setProperty("OutputWorkspace", results);
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/EvaluateFunction.cpp b/Framework/CurveFitting/src/Algorithms/EvaluateFunction.cpp
similarity index 94%
rename from Framework/CurveFitting/src/EvaluateFunction.cpp
rename to Framework/CurveFitting/src/Algorithms/EvaluateFunction.cpp
index d5c5e9e7099de52de4bcca1fd6203f2ed22cc061..9e072bd88875299e3e259ac3f7b024717c91d27e 100644
--- a/Framework/CurveFitting/src/EvaluateFunction.cpp
+++ b/Framework/CurveFitting/src/Algorithms/EvaluateFunction.cpp
@@ -1,7 +1,8 @@
-#include "MantidCurveFitting/EvaluateFunction.h"
+#include "MantidCurveFitting/Algorithms/EvaluateFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
@@ -55,5 +56,6 @@ void EvaluateFunction::execConcrete() {
   setProperty("OutputWorkspace", outputWS);
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Fit.cpp b/Framework/CurveFitting/src/Algorithms/Fit.cpp
similarity index 97%
rename from Framework/CurveFitting/src/Fit.cpp
rename to Framework/CurveFitting/src/Algorithms/Fit.cpp
index c37debe935c3074b8cce0224b27cff1c2ae5a4a2..b10b66a8a918dca32327fc32d80a04a0136e399e 100644
--- a/Framework/CurveFitting/src/Fit.cpp
+++ b/Framework/CurveFitting/src/Algorithms/Fit.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/CostFuncFitting.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -18,6 +18,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 // Register the class into the algorithm factory
 DECLARE_ALGORITHM(Fit)
@@ -63,7 +64,7 @@ void Fit::initConcrete() {
       API::CostFunctionFactory::Instance().getKeys();
   // select only CostFuncFitting variety
   for (auto it = costFuncOptions.begin(); it != costFuncOptions.end(); ++it) {
-    auto costFunc = boost::dynamic_pointer_cast<CostFuncFitting>(
+    auto costFunc = boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
         API::CostFunctionFactory::Instance().create(*it));
     if (!costFunc) {
       *it = "";
@@ -152,8 +153,8 @@ void Fit::execConcrete() {
   const size_t maxIterations = static_cast<size_t>(intMaxIterations);
 
   // get the cost function which must be a CostFuncFitting
-  boost::shared_ptr<CostFuncFitting> costFunc =
-      boost::dynamic_pointer_cast<CostFuncFitting>(
+  boost::shared_ptr<CostFunctions::CostFuncFitting> costFunc =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
           API::CostFunctionFactory::Instance().create(
               getPropertyValue("CostFunction")));
 
@@ -362,5 +363,6 @@ void Fit::execConcrete() {
   progress(1.0);
 }
 
-} // namespace Algorithm
+} // namespace Algorithms
+} // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Fit1D.cpp b/Framework/CurveFitting/src/Algorithms/Fit1D.cpp
similarity index 99%
rename from Framework/CurveFitting/src/Fit1D.cpp
rename to Framework/CurveFitting/src/Algorithms/Fit1D.cpp
index d6db35e872a292e107331397fa707c1a23b3e5bd..3f3db8ff573c4ba24d9da29b069138b950125401 100644
--- a/Framework/CurveFitting/src/Fit1D.cpp
+++ b/Framework/CurveFitting/src/Algorithms/Fit1D.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Fit1D.h"
+#include "MantidCurveFitting/Algorithms/Fit1D.h"
 #include <sstream>
 #include <numeric>
 #include <cmath>
@@ -20,6 +20,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 using namespace Kernel;
 using API::WorkspaceProperty;
@@ -776,5 +777,6 @@ FitData::FitData(Fit1D *fit, const std::string &fixed)
       J.m_map[i] = -1;
 }
 
-} // namespace Algorithm
+} // namespace Algorithms
+} // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FitPowderDiffPeaks.cpp b/Framework/CurveFitting/src/Algorithms/FitPowderDiffPeaks.cpp
similarity index 99%
rename from Framework/CurveFitting/src/FitPowderDiffPeaks.cpp
rename to Framework/CurveFitting/src/Algorithms/FitPowderDiffPeaks.cpp
index e24430a6d96c91e439b21d0938cc7e25b45582ab..b69b92fdba2ae6bc11c07eaadbd5e5c46d75924d 100644
--- a/Framework/CurveFitting/src/FitPowderDiffPeaks.cpp
+++ b/Framework/CurveFitting/src/Algorithms/FitPowderDiffPeaks.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/FitPowderDiffPeaks.h"
+#include "MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h"
 
 #include "MantidKernel/ListValidator.h"
 #include "MantidKernel/ArrayProperty.h"
@@ -16,16 +16,16 @@
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/TextAxis.h"
 
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
-#include "MantidCurveFitting/ThermalNeutronDtoTOFFunction.h"
-#include "MantidCurveFitting/Polynomial.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/BackToBackExponential.h"
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h"
-#include "MantidCurveFitting/DampingMinimizer.h"
-#include "MantidCurveFitting/CostFuncFitting.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/BackToBackExponential.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/FuncMinimizers/DampingMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
 
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/split.hpp>
@@ -50,11 +50,14 @@ using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::Kernel;
 using namespace Mantid::DataObjects;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Constraints;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 DECLARE_ALGORITHM(FitPowderDiffPeaks)
 
@@ -590,7 +593,7 @@ void FitPowderDiffPeaks::observePeakRange(BackToBackExponential_sptr thispeak,
   * Assumption:
   * 1. peak must be in the range of [input peak center - leftdev, + rightdev]
   *
-  * Prerequisit:
+  * Prerequisites:
   * ---- NONE!
   *
   * Algorithms:
@@ -1853,10 +1856,9 @@ bool FitPowderDiffPeaks::doFitGaussianPeak(DataObjects::Workspace2D_sptr dataws,
   // b) Constraint
   double centerleftend = in_center - leftfwhm * 0.5;
   double centerrightend = in_center + rightfwhm * 0.5;
-  CurveFitting::BoundaryConstraint *centerbound =
-      new CurveFitting::BoundaryConstraint(gaussianpeak.get(), "PeakCentre",
-                                           centerleftend, centerrightend,
-                                           false);
+  Constraints::BoundaryConstraint *centerbound =
+      new Constraints::BoundaryConstraint(gaussianpeak.get(), "PeakCentre",
+                                          centerleftend, centerrightend, false);
   gaussianpeak->addConstraint(centerbound);
 
   // 3. Fit
@@ -2811,7 +2813,7 @@ FitPowderDiffPeaks::genPeak(map<string, int> hklmap,
                             map<string, string> bk2bk2braggmap, bool &good,
                             vector<int> &hkl, double &d_h) {
   // Generate a peak function
-  CurveFitting::BackToBackExponential newpeak;
+  BackToBackExponential newpeak;
   newpeak.initialize();
   BackToBackExponential_sptr newpeakptr =
       boost::make_shared<BackToBackExponential>(newpeak);
@@ -3447,5 +3449,6 @@ size_t findMaxValue(MatrixWorkspace_sptr dataws, size_t wsindex,
   return imax;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LeBailFit.cpp b/Framework/CurveFitting/src/Algorithms/LeBailFit.cpp
similarity index 99%
rename from Framework/CurveFitting/src/LeBailFit.cpp
rename to Framework/CurveFitting/src/Algorithms/LeBailFit.cpp
index 9996f8049856bb1e88c279037da696b41d2c2f57..60e3d731b21978a1bb9b3ed92ab4deb36575ab06 100644
--- a/Framework/CurveFitting/src/LeBailFit.cpp
+++ b/Framework/CurveFitting/src/Algorithms/LeBailFit.cpp
@@ -4,15 +4,15 @@
 
  * COMMIT NOTES */
 
-#include "MantidCurveFitting/LeBailFit.h"
+#include "MantidCurveFitting/Algorithms/LeBailFit.h"
 #include "MantidKernel/ListValidator.h"
 #include "MantidAPI/TableRow.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/ArrayProperty.h"
 #include "MantidKernel/VisibleWhenProperty.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 #include "MantidAPI/TextAxis.h"
 
 #include <boost/algorithm/string.hpp>
@@ -43,6 +43,7 @@ using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 const Rfactor badR(DBL_MAX, DBL_MAX);
 
@@ -2691,5 +2692,6 @@ void writeRfactorsToFile(vector<double> vecX, vector<Rfactor> vecR,
   return;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LeBailFunction.cpp b/Framework/CurveFitting/src/Algorithms/LeBailFunction.cpp
similarity index 99%
rename from Framework/CurveFitting/src/LeBailFunction.cpp
rename to Framework/CurveFitting/src/Algorithms/LeBailFunction.cpp
index bed2bfd968fe5c19504ed0b82621c91502ef595e..0d9ee16925a41aaa4efb24ce3524080ca49365b9 100644
--- a/Framework/CurveFitting/src/LeBailFunction.cpp
+++ b/Framework/CurveFitting/src/Algorithms/LeBailFunction.cpp
@@ -1,9 +1,9 @@
 #include "MantidAPI/Algorithm.h"
-#include "MantidCurveFitting/LeBailFunction.h"
+#include "MantidCurveFitting/Algorithms/LeBailFunction.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
 #include <sstream>
 
@@ -18,6 +18,7 @@ const double NEG_DBL_MAX(-1. * DBL_MAX);
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 namespace {
 const double PEAKRANGECONSTANT = 5.0;
 
@@ -894,7 +895,8 @@ void LeBailFunction::addBackgroundFunction(
 
   // Create background function from factory
   auto background = FunctionFactory::Instance().createFunction(backgroundtype);
-  m_background = boost::dynamic_pointer_cast<BackgroundFunction>(background);
+  m_background =
+      boost::dynamic_pointer_cast<Functions::BackgroundFunction>(background);
 
   // Set order and initialize
   m_background->setAttributeValue("n", static_cast<int>(order));
@@ -946,7 +948,7 @@ void LeBailFunction::setFitProfileParameter(string paramname, double minvalue,
   std::stringstream parss;
   parss << "f0." << paramname;
   string parnamef0 = parss.str();
-  CurveFitting::BoundaryConstraint *bc = new BoundaryConstraint(
+  Constraints::BoundaryConstraint *bc = new Constraints::BoundaryConstraint(
       m_compsiteFunction.get(), parnamef0, minvalue, maxvalue);
   m_compsiteFunction->addConstraint(bc);
 
@@ -1153,4 +1155,5 @@ double LeBailFunction::getPeakMaximumValue(std::vector<int> hkl,
 }
 
 } // namespace Mantid
+} // namespace Algorithms
 } // namespace CurveFitting
diff --git a/Framework/CurveFitting/src/NormaliseByPeakArea.cpp b/Framework/CurveFitting/src/Algorithms/NormaliseByPeakArea.cpp
similarity index 99%
rename from Framework/CurveFitting/src/NormaliseByPeakArea.cpp
rename to Framework/CurveFitting/src/Algorithms/NormaliseByPeakArea.cpp
index f3a7522bbfac8b7f93e12d9980b70f9c502b4814..780f0feb4261bf251d0c137fae577124e818ec44 100644
--- a/Framework/CurveFitting/src/NormaliseByPeakArea.cpp
+++ b/Framework/CurveFitting/src/Algorithms/NormaliseByPeakArea.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/NormaliseByPeakArea.h"
+#include "MantidCurveFitting/Algorithms/NormaliseByPeakArea.h"
 
 #include "MantidAPI/IFunction.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 /// Starting value of peak position in y-space for fit
 double PEAK_POS_GUESS = -0.1;
@@ -381,5 +382,6 @@ void NormaliseByPeakArea::symmetriseYSpace() {
   }
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PawleyFit.cpp b/Framework/CurveFitting/src/Algorithms/PawleyFit.cpp
similarity index 94%
rename from Framework/CurveFitting/src/PawleyFit.cpp
rename to Framework/CurveFitting/src/Algorithms/PawleyFit.cpp
index 19cfd18fd2cbb7d9e1c079d6d2aa2c33ddde2979..22b87ff3efafd815630d8527b13152414abfe9cc 100644
--- a/Framework/CurveFitting/src/PawleyFit.cpp
+++ b/Framework/CurveFitting/src/Algorithms/PawleyFit.cpp
@@ -1,7 +1,7 @@
-#include "MantidCurveFitting/PawleyFit.h"
+#include "MantidCurveFitting/Algorithms/PawleyFit.h"
 
 #include "MantidAPI/FunctionFactory.h"
-#include "MantidCurveFitting/PawleyFunction.h"
+#include "MantidCurveFitting/Functions/PawleyFunction.h"
 #include "MantidAPI/ITableWorkspace.h"
 #include "MantidAPI/TableRow.h"
 
@@ -14,6 +14,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 using namespace API;
 using namespace Kernel;
@@ -62,7 +63,7 @@ double PawleyFit::getTransformedCenter(double d, const Unit_sptr &unit) const {
  * @param startX :: Lowest allowed x-value for reflection position.
  * @param endX :: Highest allowed x-value for reflection position.
  */
-void PawleyFit::addHKLsToFunction(PawleyFunction_sptr &pawleyFn,
+void PawleyFit::addHKLsToFunction(Functions::PawleyFunction_sptr &pawleyFn,
                                   const ITableWorkspace_sptr &tableWs,
                                   const Unit_sptr &unit, double startX,
                                   double endX) const {
@@ -105,8 +106,8 @@ void PawleyFit::addHKLsToFunction(PawleyFunction_sptr &pawleyFn,
 
 /// Creates a table containing the cell parameters stored in the supplied
 /// function.
-ITableWorkspace_sptr
-PawleyFit::getLatticeFromFunction(const PawleyFunction_sptr &pawleyFn) const {
+ITableWorkspace_sptr PawleyFit::getLatticeFromFunction(
+    const Functions::PawleyFunction_sptr &pawleyFn) const {
   if (!pawleyFn) {
     throw std::invalid_argument(
         "Cannot extract lattice parameters from null function.");
@@ -119,7 +120,7 @@ PawleyFit::getLatticeFromFunction(const PawleyFunction_sptr &pawleyFn) const {
   latticeParameterTable->addColumn("double", "Value");
   latticeParameterTable->addColumn("double", "Error");
 
-  PawleyParameterFunction_sptr parameters =
+  Functions::PawleyParameterFunction_sptr parameters =
       pawleyFn->getPawleyParameterFunction();
 
   for (size_t i = 0; i < parameters->nParams(); ++i) {
@@ -133,7 +134,7 @@ PawleyFit::getLatticeFromFunction(const PawleyFunction_sptr &pawleyFn) const {
 
 /// Extracts all profile parameters from the supplied function.
 ITableWorkspace_sptr PawleyFit::getPeakParametersFromFunction(
-    const PawleyFunction_sptr &pawleyFn) const {
+    const Functions::PawleyFunction_sptr &pawleyFn) const {
   if (!pawleyFn) {
     throw std::invalid_argument(
         "Cannot extract peak parameters from null function.");
@@ -167,8 +168,8 @@ ITableWorkspace_sptr PawleyFit::getPeakParametersFromFunction(
 
 /// Returns a composite function consisting of the Pawley function and Chebyshev
 /// background if enabled in the algorithm.
-IFunction_sptr
-PawleyFit::getCompositeFunction(const PawleyFunction_sptr &pawleyFn) const {
+IFunction_sptr PawleyFit::getCompositeFunction(
+    const Functions::PawleyFunction_sptr &pawleyFn) const {
   CompositeFunction_sptr composite = boost::make_shared<CompositeFunction>();
   composite->addFunction(pawleyFn);
 
@@ -271,8 +272,9 @@ void PawleyFit::init() {
 /// Execution of algorithm.
 void PawleyFit::exec() {
   // Setup PawleyFunction with cell from input parameters
-  PawleyFunction_sptr pawleyFn = boost::dynamic_pointer_cast<PawleyFunction>(
-      FunctionFactory::Instance().createFunction("PawleyFunction"));
+  Functions::PawleyFunction_sptr pawleyFn =
+      boost::dynamic_pointer_cast<Functions::PawleyFunction>(
+          FunctionFactory::Instance().createFunction("PawleyFunction"));
   g_log.information() << "Setting up Pawley function..." << std::endl;
 
   std::string profileFunction = getProperty("PeakProfileFunction");
@@ -286,7 +288,7 @@ void PawleyFit::exec() {
                       << std::endl;
 
   pawleyFn->setUnitCell(getProperty("InitialCell"));
-  PawleyParameterFunction_sptr pawleyParameterFunction =
+  Functions::PawleyParameterFunction_sptr pawleyParameterFunction =
       pawleyFn->getPawleyParameterFunction();
   g_log.information()
       << "  Initial unit cell: "
@@ -416,5 +418,6 @@ V3D V3DFromHKLColumnExtractor::getHKLFromString(
   return hkl;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PlotPeakByLogValue.cpp b/Framework/CurveFitting/src/Algorithms/PlotPeakByLogValue.cpp
similarity index 99%
rename from Framework/CurveFitting/src/PlotPeakByLogValue.cpp
rename to Framework/CurveFitting/src/Algorithms/PlotPeakByLogValue.cpp
index 152331bab772848b2fb6d7efc2446d16b335564e..1478d845126c02fd1f1acc413dd612f3e9d521e8 100644
--- a/Framework/CurveFitting/src/PlotPeakByLogValue.cpp
+++ b/Framework/CurveFitting/src/Algorithms/PlotPeakByLogValue.cpp
@@ -10,7 +10,7 @@
 #include <boost/lexical_cast.hpp>
 #include <boost/algorithm/string/replace.hpp>
 
-#include "MantidCurveFitting/PlotPeakByLogValue.h"
+#include "MantidCurveFitting/Algorithms/PlotPeakByLogValue.h"
 #include "MantidAPI/IFuncMinimizer.h"
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -35,6 +35,7 @@ Mantid::Kernel::Logger g_log("PlotPeakByLogValue");
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 using namespace Kernel;
 using namespace API;
@@ -618,5 +619,6 @@ PlotPeakByLogValue::getMinimizerString(const std::string &wsName,
   return format;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/RefinePowderInstrumentParameters.cpp b/Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters.cpp
similarity index 97%
rename from Framework/CurveFitting/src/RefinePowderInstrumentParameters.cpp
rename to Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters.cpp
index 36283c03f21b9dfa9d0361311be9bbe6d31ca3c6..4ccf36c181713ade97f6829c869b01ed826bdb29 100644
--- a/Framework/CurveFitting/src/RefinePowderInstrumentParameters.cpp
+++ b/Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/RefinePowderInstrumentParameters.h"
+#include "MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h"
 
 #include "MantidKernel/ListValidator.h"
 #include "MantidKernel/ArrayProperty.h"
@@ -14,11 +14,11 @@
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/TextAxis.h"
 
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/BackgroundFunction.h"
-#include "MantidCurveFitting/Polynomial.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Gaussian.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
 
 #include "MantidGeometry/Crystal/UnitCell.h"
 
@@ -33,11 +33,15 @@ using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::Kernel;
 using namespace Mantid::DataObjects;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Constraints;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 DECLARE_ALGORITHM(RefinePowderInstrumentParameters)
 
@@ -45,7 +49,7 @@ DECLARE_ALGORITHM(RefinePowderInstrumentParameters)
 /** Constructor
  */
 RefinePowderInstrumentParameters::RefinePowderInstrumentParameters()
-    : m_BestGSLChi2(0.0), m_MinSigma(0.0), m_MinNumFittedm_Peaks(0),
+    : m_BestGSLChi2(0.0), m_MinSigma(0.0), m_MinNumFittedPeaks(0),
       m_MaxNumberStoredParameters(0) {}
 
 //----------------------------------------------------------------------------------------------
@@ -151,7 +155,7 @@ void RefinePowderInstrumentParameters::exec() {
                   << " is too small. " << endl;
     throw std::invalid_argument("Input MinNumberFittedm_Peaks is too small.");
   }
-  m_MinNumFittedm_Peaks = static_cast<size_t>(tempint);
+  m_MinNumFittedPeaks = static_cast<size_t>(tempint);
 
   tempint = getProperty("NumberBestFitRecorded");
   if (tempint <= 0)
@@ -169,7 +173,7 @@ void RefinePowderInstrumentParameters::exec() {
                         "MonteCarlo are not supported.");
 
   // 2. Parse input table workspace
-  genm_PeaksFromTable(peakWS);
+  genPeaksFromTable(peakWS);
   importParametersFromTable(parameterWS, m_FuncParameters);
   m_OrigParameters = m_FuncParameters;
 
@@ -225,9 +229,8 @@ void RefinePowderInstrumentParameters::fitInstrumentParameters() {
        << endl;
 
   // 1. Initialize the fitting function
-  CurveFitting::ThermalNeutronDtoTOFFunction rawfunc;
-  m_Function =
-      boost::make_shared<CurveFitting::ThermalNeutronDtoTOFFunction>(rawfunc);
+  ThermalNeutronDtoTOFFunction rawfunc;
+  m_Function = boost::make_shared<ThermalNeutronDtoTOFFunction>(rawfunc);
   m_Function->initialize();
 
   API::FunctionDomain1DVector domain(m_dataWS->readX(1));
@@ -804,7 +807,7 @@ void RefinePowderInstrumentParameters::getD2TOFFuncParamNames(
   parnames.clear();
 
   // 2. Get the parameter names from function
-  CurveFitting::ThermalNeutronDtoTOFFunction d2toffunc;
+  ThermalNeutronDtoTOFFunction d2toffunc;
   d2toffunc.initialize();
   std::vector<std::string> funparamnames = d2toffunc.getParameterNames();
 
@@ -862,7 +865,7 @@ double RefinePowderInstrumentParameters::calculateD2TOFFunction(
 /** Genearte peaks from input workspace
   * m_Peaks are stored in a map.  (HKL) is the key
   */
-void RefinePowderInstrumentParameters::genm_PeaksFromTable(
+void RefinePowderInstrumentParameters::genPeaksFromTable(
     DataObjects::TableWorkspace_sptr peakparamws) {
   // 1. Check and clear input and output
   if (!peakparamws) {
@@ -872,7 +875,7 @@ void RefinePowderInstrumentParameters::genm_PeaksFromTable(
         "Invalid input table workspace for peak parameters");
   }
 
-  mm_Peaks.clear();
+  m_Peaks.clear();
 
   // 2. Parse table workspace rows to generate peaks
   vector<string> colnames = peakparamws->getColumnNames();
@@ -880,7 +883,7 @@ void RefinePowderInstrumentParameters::genm_PeaksFromTable(
 
   for (size_t ir = 0; ir < numrows; ++ir) {
     // a) Generate peak
-    CurveFitting::BackToBackExponential newpeak;
+    BackToBackExponential newpeak;
     newpeak.initialize();
 
     // b) Parse parameters
@@ -931,15 +934,15 @@ void RefinePowderInstrumentParameters::genm_PeaksFromTable(
     newpeak.setParameter("I", height);
 
     // d) Make to share pointer and set to instance data structure (map)
-    CurveFitting::BackToBackExponential_sptr newpeakptr =
-        boost::make_shared<CurveFitting::BackToBackExponential>(newpeak);
+    BackToBackExponential_sptr newpeakptr =
+        boost::make_shared<BackToBackExponential>(newpeak);
 
     std::vector<int> hkl;
     hkl.push_back(h);
     hkl.push_back(k);
     hkl.push_back(l);
 
-    mm_Peaks.insert(std::make_pair(hkl, newpeakptr));
+    m_Peaks.insert(std::make_pair(hkl, newpeakptr));
 
     m_PeakErrors.insert(make_pair(hkl, chi2));
 
@@ -1169,14 +1172,13 @@ void RefinePowderInstrumentParameters::genPeakCentersWorkspace(
     throw runtime_error(errss.str());
   }
 
-  std::map<std::vector<int>, CurveFitting::BackToBackExponential_sptr>::iterator
-      peakiter;
+  std::map<std::vector<int>, BackToBackExponential_sptr>::iterator peakiter;
   std::vector<std::pair<double, std::pair<double, double>>>
       peakcenters; // d_h [TOF_h, CHI2]
 
   Geometry::UnitCell unitcell(lattice, lattice, lattice, 90.0, 90.0, 90.0);
 
-  for (peakiter = mm_Peaks.begin(); peakiter != mm_Peaks.end(); ++peakiter) {
+  for (peakiter = m_Peaks.begin(); peakiter != m_Peaks.end(); ++peakiter) {
     vector<int> hkl = peakiter->first;
     BackToBackExponential_sptr peak = peakiter->second;
 
@@ -1301,5 +1303,6 @@ RefinePowderInstrumentParameters::genOutputInstrumentParameterTable() {
   return newtablews;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/RefinePowderInstrumentParameters3.cpp b/Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters3.cpp
similarity index 99%
rename from Framework/CurveFitting/src/RefinePowderInstrumentParameters3.cpp
rename to Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters3.cpp
index b2f339bc14ef4a88622e1565a4df50765cee08ee..a5c35c1f331d71bca31643d8fc85b77d7bf7b2fd 100644
--- a/Framework/CurveFitting/src/RefinePowderInstrumentParameters3.cpp
+++ b/Framework/CurveFitting/src/Algorithms/RefinePowderInstrumentParameters3.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/RefinePowderInstrumentParameters3.h"
+#include "MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h"
 
 #include "MantidAPI/Axis.h"
 #include "MantidAPI/TextAxis.h"
@@ -7,12 +7,14 @@
 
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 using namespace Mantid::Kernel;
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 DECLARE_ALGORITHM(RefinePowderInstrumentParameters3)
 
@@ -1266,8 +1268,9 @@ void RefinePowderInstrumentParameters3::setFunctionParameterFitSetups(
         double upperbound = param.maxvalue;
         if (lowerbound >= -DBL_MAX * 0.1 || upperbound <= DBL_MAX * 0.1) {
           // If there is a boundary
-          BoundaryConstraint *bc = new BoundaryConstraint(
-              function.get(), parname, lowerbound, upperbound, false);
+          Constraints::BoundaryConstraint *bc =
+              new Constraints::BoundaryConstraint(
+                  function.get(), parname, lowerbound, upperbound, false);
           function->addConstraint(bc);
         }
       } else {
@@ -1428,5 +1431,6 @@ void restoreFunctionParameterValue(
   return;
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/SplineBackground.cpp b/Framework/CurveFitting/src/Algorithms/SplineBackground.cpp
similarity index 97%
rename from Framework/CurveFitting/src/SplineBackground.cpp
rename to Framework/CurveFitting/src/Algorithms/SplineBackground.cpp
index d3eddbab62067a8297f96e73f2911bfccfe6eab8..93b2e86016a7320e17d3ae657789ec49ad86da6f 100644
--- a/Framework/CurveFitting/src/SplineBackground.cpp
+++ b/Framework/CurveFitting/src/Algorithms/SplineBackground.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/SplineBackground.h"
+#include "MantidCurveFitting/Algorithms/SplineBackground.h"
 #include <gsl/gsl_bspline.h>
 #include <gsl/gsl_multifit.h>
 #include <gsl/gsl_statistics.h>
@@ -9,6 +9,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 DECLARE_ALGORITHM(SplineBackground)
 
@@ -170,5 +171,6 @@ void SplineBackground::exec() {
   setProperty("OutputWorkspace", outWS);
 }
 
-} // namespace Algorithm
+} // namespace Algorithms
+} // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/SplineInterpolation.cpp b/Framework/CurveFitting/src/Algorithms/SplineInterpolation.cpp
similarity index 98%
rename from Framework/CurveFitting/src/SplineInterpolation.cpp
rename to Framework/CurveFitting/src/Algorithms/SplineInterpolation.cpp
index 63731d8bd084bc41f9eda55f90669c0b41b494d1..9d1a1bc531c9d0dc3c765ddf3a904e1bf1955a7c 100644
--- a/Framework/CurveFitting/src/SplineInterpolation.cpp
+++ b/Framework/CurveFitting/src/Algorithms/SplineInterpolation.cpp
@@ -2,16 +2,18 @@
 #include "MantidAPI/NumericAxis.h"
 #include "MantidAPI/Progress.h"
 #include "MantidKernel/BoundedValidator.h"
-#include "MantidCurveFitting/SplineInterpolation.h"
+#include "MantidCurveFitting/Algorithms/SplineInterpolation.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 // Register the algorithm into the AlgorithmFactory
 DECLARE_ALGORITHM(SplineInterpolation)
 
 using namespace API;
 using namespace Kernel;
+using Functions::CubicSpline;
 
 //----------------------------------------------------------------------------------------------
 /** Constructor
@@ -253,5 +255,6 @@ void SplineInterpolation::calculateSpline(
   m_cspline->function1D(yValues, xValues, nData);
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/SplineSmoothing.cpp b/Framework/CurveFitting/src/Algorithms/SplineSmoothing.cpp
similarity index 99%
rename from Framework/CurveFitting/src/SplineSmoothing.cpp
rename to Framework/CurveFitting/src/Algorithms/SplineSmoothing.cpp
index 9cac9523f02913279baf3857de8585df1cf1611f..87fcfb16e36bfd4af6e18a84ed51b9c459f27e3c 100644
--- a/Framework/CurveFitting/src/SplineSmoothing.cpp
+++ b/Framework/CurveFitting/src/Algorithms/SplineSmoothing.cpp
@@ -4,19 +4,20 @@
 #include "MantidAPI/TextAxis.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidKernel/BoundedValidator.h"
-#include "MantidCurveFitting/SplineSmoothing.h"
+#include "MantidCurveFitting/Algorithms/SplineSmoothing.h"
 
 #include <algorithm>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Algorithms {
 
 // Register the algorithm into the AlgorithmFactory
 DECLARE_ALGORITHM(SplineSmoothing)
 
 using namespace API;
 using namespace Kernel;
-
+using Functions::BSpline;
 //----------------------------------------------------------------------------------------------
 /** Constructor
  */
@@ -370,5 +371,6 @@ void SplineSmoothing::selectSmoothingPoints(
   }
 }
 
+} // namespace Algorithms
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/BoundaryConstraint.cpp b/Framework/CurveFitting/src/Constraints/BoundaryConstraint.cpp
similarity index 98%
rename from Framework/CurveFitting/src/BoundaryConstraint.cpp
rename to Framework/CurveFitting/src/Constraints/BoundaryConstraint.cpp
index 6ecbe020e781f48f2adbc63862c2ddb45fd067e5..86f3f52be2a7fe4549198c0a4926b5a0c3d1074a 100644
--- a/Framework/CurveFitting/src/BoundaryConstraint.cpp
+++ b/Framework/CurveFitting/src/Constraints/BoundaryConstraint.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidAPI/Expression.h"
 #include "MantidAPI/ConstraintFactory.h"
 #include "MantidKernel/Logger.h"
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Constraints {
 namespace {
 /// static logger
 Kernel::Logger g_log("BoundaryConstraint");
@@ -247,5 +248,6 @@ std::string BoundaryConstraint::asString() const {
   return ostr.str();
 }
 
+} // namespace Constraints
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CostFuncFitting.cpp b/Framework/CurveFitting/src/CostFunctions/CostFuncFitting.cpp
similarity index 98%
rename from Framework/CurveFitting/src/CostFuncFitting.cpp
rename to Framework/CurveFitting/src/CostFunctions/CostFuncFitting.cpp
index 425bdcce324e7fcf858aa95d24c5aa0bd21f2b8f..021e2ed4db9b86a3b5f85a87cd5350288186c49d 100644
--- a/Framework/CurveFitting/src/CostFuncFitting.cpp
+++ b/Framework/CurveFitting/src/CostFunctions/CostFuncFitting.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncFitting.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
 #include "MantidCurveFitting/GSLJacobian.h"
 #include "MantidAPI/IConstraint.h"
 
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 
 /**
  * Constructor.
@@ -202,5 +203,6 @@ void CostFuncFitting::calTransformationMatrixNumerically(GSLMatrix &tm) {
   }
 }
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CostFuncIgnorePosPeaks.cpp b/Framework/CurveFitting/src/CostFunctions/CostFuncIgnorePosPeaks.cpp
similarity index 95%
rename from Framework/CurveFitting/src/CostFuncIgnorePosPeaks.cpp
rename to Framework/CurveFitting/src/CostFunctions/CostFuncIgnorePosPeaks.cpp
index 6e6b404b1b2fd4fb680e0cf6c92e0babd2f2617f..8f5d5ecbb2e835d9b04494c915715a60ba097158 100644
--- a/Framework/CurveFitting/src/CostFuncIgnorePosPeaks.cpp
+++ b/Framework/CurveFitting/src/CostFunctions/CostFuncIgnorePosPeaks.cpp
@@ -1,13 +1,14 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncIgnorePosPeaks.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncIgnorePosPeaks.h"
 #include "MantidKernel/PhysicalConstants.h"
 #include <cmath>
 #include <gsl/gsl_sf_erf.h>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 
 DECLARE_COSTFUNCTION(CostFuncIgnorePosPeaks, Ignore positive peaks)
 
@@ -73,5 +74,6 @@ void CostFuncIgnorePosPeaks::deriv(const double *yData,
   }
 }
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CostFuncLeastSquares.cpp b/Framework/CurveFitting/src/CostFunctions/CostFuncLeastSquares.cpp
similarity index 98%
rename from Framework/CurveFitting/src/CostFuncLeastSquares.cpp
rename to Framework/CurveFitting/src/CostFunctions/CostFuncLeastSquares.cpp
index f0ada5744ed566b685c54fcba4fd7d3decfcb637..025968c21b954c5bac4f0754a974669bcc9f462e 100644
--- a/Framework/CurveFitting/src/CostFuncLeastSquares.cpp
+++ b/Framework/CurveFitting/src/CostFunctions/CostFuncLeastSquares.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidCurveFitting/SeqDomain.h"
 #include "MantidAPI/IConstraint.h"
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 namespace {
 /// static logger
 Kernel::Logger g_log("CostFuncLeastSquares");
@@ -436,5 +437,6 @@ void CostFuncLeastSquares::calActiveCovarianceMatrix(GSLMatrix &covar,
   }
 }
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CostFuncRwp.cpp b/Framework/CurveFitting/src/CostFunctions/CostFuncRwp.cpp
similarity index 94%
rename from Framework/CurveFitting/src/CostFuncRwp.cpp
rename to Framework/CurveFitting/src/CostFunctions/CostFuncRwp.cpp
index 0bd327fd7ea90312d76e38fc29e53f60dc16b137..17e783d9f7e438c9366c6d3fc3ffe700703e3872 100644
--- a/Framework/CurveFitting/src/CostFuncRwp.cpp
+++ b/Framework/CurveFitting/src/CostFunctions/CostFuncRwp.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CostFuncRwp.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncRwp.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidCurveFitting/SeqDomain.h"
 #include "MantidAPI/IConstraint.h"
@@ -12,6 +12,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 
 DECLARE_COSTFUNCTION(CostFuncRwp, Rwp)
 
@@ -63,5 +64,6 @@ double CostFuncRwp::calSqrtW(API::FunctionValues_sptr values) const {
   return sqrt(weight);
 }
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CostFuncUnweightedLeastSquares.cpp b/Framework/CurveFitting/src/CostFunctions/CostFuncUnweightedLeastSquares.cpp
similarity index 95%
rename from Framework/CurveFitting/src/CostFuncUnweightedLeastSquares.cpp
rename to Framework/CurveFitting/src/CostFunctions/CostFuncUnweightedLeastSquares.cpp
index 278e5c6b9bd3421817651ed8d8565c14bece862a..c7eadd62b70a84e434abd1ab4eacc719f584a558 100644
--- a/Framework/CurveFitting/src/CostFuncUnweightedLeastSquares.cpp
+++ b/Framework/CurveFitting/src/CostFunctions/CostFuncUnweightedLeastSquares.cpp
@@ -1,10 +1,11 @@
-#include "MantidCurveFitting/CostFuncUnweightedLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h"
 
 #include "MantidKernel/Logger.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace CostFunctions {
 
 namespace {
 /// static logger
@@ -79,5 +80,6 @@ double CostFuncUnweightedLeastSquares::getResidualVariance() const {
   return residualVariance;
 }
 
+} // namespace CostFunctions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FitMW.cpp b/Framework/CurveFitting/src/FitMW.cpp
index d98e9dc7f3719d3111503175281cd3cd0d12242a..730110936f4ad63ae1821bdd9fe2d7c4e1cd6d15 100644
--- a/Framework/CurveFitting/src/FitMW.cpp
+++ b/Framework/CurveFitting/src/FitMW.cpp
@@ -2,7 +2,7 @@
 //----------------------------------------------------------------------
 #include "MantidCurveFitting/FitMW.h"
 #include "MantidCurveFitting/SeqDomain.h"
-#include "MantidCurveFitting/Convolution.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
 #include "MantidCurveFitting/ParameterEstimator.h"
 
 #include "MantidAPI/CompositeFunction.h"
@@ -449,7 +449,7 @@ void FitMW::appendCompositeFunctionMembers(
   // if function is a Convolution then output of convolved model's mebers may be
   // required
   if (m_convolutionCompositeMembers &&
-      boost::dynamic_pointer_cast<CurveFitting::Convolution>(function)) {
+      boost::dynamic_pointer_cast<Functions::Convolution>(function)) {
     appendConvolvedCompositeFunctionMembers(functionList, function);
   } else {
     const auto compositeFn =
@@ -486,8 +486,8 @@ void FitMW::appendCompositeFunctionMembers(
 void FitMW::appendConvolvedCompositeFunctionMembers(
     std::list<API::IFunction_sptr> &functionList,
     const API::IFunction_sptr &function) const {
-  boost::shared_ptr<CurveFitting::Convolution> convolution =
-      boost::dynamic_pointer_cast<CurveFitting::Convolution>(function);
+  boost::shared_ptr<Functions::Convolution> convolution =
+      boost::dynamic_pointer_cast<Functions::Convolution>(function);
 
   const auto compositeFn = boost::dynamic_pointer_cast<API::CompositeFunction>(
       convolution->getFunction(1));
@@ -498,8 +498,8 @@ void FitMW::appendConvolvedCompositeFunctionMembers(
     const size_t nlocals = compositeFn->nFunctions();
     for (size_t i = 0; i < nlocals; ++i) {
       auto localFunction = compositeFn->getFunction(i);
-      boost::shared_ptr<CurveFitting::Convolution> localConvolution =
-          boost::make_shared<CurveFitting::Convolution>();
+      boost::shared_ptr<Functions::Convolution> localConvolution =
+          boost::make_shared<Functions::Convolution>();
       localConvolution->addFunction(resolution);
       localConvolution->addFunction(localFunction);
       functionList.insert(functionList.end(), localConvolution);
diff --git a/Framework/CurveFitting/src/BFGS_Minimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/BFGS_Minimizer.cpp
similarity index 85%
rename from Framework/CurveFitting/src/BFGS_Minimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/BFGS_Minimizer.cpp
index 8feb486fce889ac7784d01cbfe6a74a1032e0499..40b817c1028cc4f3d818e529859f37a7352fd00d 100644
--- a/Framework/CurveFitting/src/BFGS_Minimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/BFGS_Minimizer.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BFGS_Minimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 namespace {
 /// static logger object
 Kernel::Logger g_log("BFGS_Minimizer");
@@ -23,5 +24,6 @@ const gsl_multimin_fdfminimizer_type *BFGS_Minimizer::getGSLMinimizerType() {
   return gsl_multimin_fdfminimizer_vector_bfgs2;
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DampingMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/DampingMinimizer.cpp
similarity index 91%
rename from Framework/CurveFitting/src/DampingMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/DampingMinimizer.cpp
index 01e3169ebba8d9a0d3587a6d30143796d1de82f0..08114e04a546b699b4f359ba826924cf850a1917 100644
--- a/Framework/CurveFitting/src/DampingMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/DampingMinimizer.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DampingMinimizer.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/DampingMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -17,6 +17,8 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
+
 namespace {
 /// static logger
 Kernel::Logger g_log("DampingMinimizer");
@@ -32,7 +34,9 @@ DampingMinimizer::DampingMinimizer(double relTol)
 
 /// Initialize minimizer, i.e. pass a function to minimize.
 void DampingMinimizer::initialize(API::ICostFunction_sptr function, size_t) {
-  m_leastSquares = boost::dynamic_pointer_cast<CostFuncLeastSquares>(function);
+  m_leastSquares =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncLeastSquares>(
+          function);
   if (!m_leastSquares) {
     throw std::invalid_argument("Damping minimizer works only with least "
                                 "squares. Different function was given.");
@@ -121,5 +125,6 @@ double DampingMinimizer::costFunctionVal() {
   return m_leastSquares->val();
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DerivMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/DerivMinimizer.cpp
similarity index 88%
rename from Framework/CurveFitting/src/DerivMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/DerivMinimizer.cpp
index 57cbc5a122fcbce37b30629977b8cc9c6dcc0dc0..5f54e75d6d7bea7407b1156cb3d8d035f05e59e1 100644
--- a/Framework/CurveFitting/src/DerivMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/DerivMinimizer.cpp
@@ -1,11 +1,12 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DerivMinimizer.h"
-#include "MantidCurveFitting/CostFuncFitting.h"
+#include "MantidCurveFitting/FuncMinimizers/DerivMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 
 /** Used by the GSL to calculate the cost function.
  * @param x :: Vector with parameters
@@ -17,8 +18,9 @@ double DerivMinimizer::fun(const gsl_vector *x, void *params) {
   for (size_t i = 0; i < n; ++i) {
     minimizer.m_costFunction->setParameter(i, gsl_vector_get(x, i));
   }
-  boost::shared_ptr<CostFuncFitting> fitting =
-      boost::dynamic_pointer_cast<CostFuncFitting>(minimizer.m_costFunction);
+  boost::shared_ptr<CostFunctions::CostFuncFitting> fitting =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
+          minimizer.m_costFunction);
   if (fitting) {
     fitting->getFittingFunction()->applyTies();
   }
@@ -36,8 +38,9 @@ void DerivMinimizer::dfun(const gsl_vector *x, void *params, gsl_vector *g) {
   for (size_t i = 0; i < n; ++i) {
     minimizer.m_costFunction->setParameter(i, gsl_vector_get(x, i));
   }
-  boost::shared_ptr<CostFuncFitting> fitting =
-      boost::dynamic_pointer_cast<CostFuncFitting>(minimizer.m_costFunction);
+  boost::shared_ptr<CostFunctions::CostFuncFitting> fitting =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
+          minimizer.m_costFunction);
   if (fitting) {
     fitting->getFittingFunction()->applyTies();
   }
@@ -61,8 +64,9 @@ void DerivMinimizer::fundfun(const gsl_vector *x, void *params, double *f,
   for (size_t i = 0; i < n; ++i) {
     minimizer.m_costFunction->setParameter(i, gsl_vector_get(x, i));
   }
-  boost::shared_ptr<CostFuncFitting> fitting =
-      boost::dynamic_pointer_cast<CostFuncFitting>(minimizer.m_costFunction);
+  boost::shared_ptr<CostFunctions::CostFuncFitting> fitting =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
+          minimizer.m_costFunction);
   if (fitting) {
     fitting->getFittingFunction()->applyTies();
   }
@@ -173,5 +177,6 @@ void DerivMinimizer::setStopGradient(const double value) {
 
 double DerivMinimizer::costFunctionVal() { return m_gslSolver->f; }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FABADAMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/FABADAMinimizer.cpp
similarity index 97%
rename from Framework/CurveFitting/src/FABADAMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/FABADAMinimizer.cpp
index f6c47ccff74677882e6f1b74ca874124be32baa0..fcdedf14c5017e8603999ccc7f97b1b8076febef 100644
--- a/Framework/CurveFitting/src/FABADAMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/FABADAMinimizer.cpp
@@ -1,6 +1,6 @@
-#include "MantidCurveFitting/FABADAMinimizer.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting//Constraints/BoundaryConstraint.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -30,6 +30,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 
 namespace {
 // static logger object
@@ -91,7 +92,9 @@ FABADAMinimizer::~FABADAMinimizer() {}
 void FABADAMinimizer::initialize(API::ICostFunction_sptr function,
                                  size_t maxIterations) {
 
-  m_leastSquares = boost::dynamic_pointer_cast<CostFuncLeastSquares>(function);
+  m_leastSquares =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncLeastSquares>(
+          function);
   if (!m_leastSquares) {
     throw std::invalid_argument(
         "FABADA works only with least squares. Different function was given.");
@@ -120,7 +123,8 @@ void FABADAMinimizer::initialize(API::ICostFunction_sptr function,
     m_bound.push_back(false);
     API::IConstraint *iconstr = fun->getConstraint(i);
     if (iconstr) {
-      BoundaryConstraint *bcon = dynamic_cast<BoundaryConstraint *>(iconstr);
+      Constraints::BoundaryConstraint *bcon =
+          dynamic_cast<Constraints::BoundaryConstraint *>(iconstr);
       if (bcon) {
         m_bound[i] = true;
         if (bcon->hasLower()) {
@@ -640,5 +644,6 @@ void FABADAMinimizer::finalize() {
   }
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FRConjugateGradientMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/FRConjugateGradientMinimizer.cpp
similarity index 86%
rename from Framework/CurveFitting/src/FRConjugateGradientMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/FRConjugateGradientMinimizer.cpp
index a06a974c52ff6db48b0532bf76cab1c32bb2fd2e..d609f35a7cf2132a0a4c5b2aa81388d8cefb17d5 100644
--- a/Framework/CurveFitting/src/FRConjugateGradientMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/FRConjugateGradientMinimizer.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/FRConjugateGradientMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 namespace {
 /// static logger
 Kernel::Logger g_log("FRConjugateGradientMinimizer");
@@ -28,5 +29,6 @@ FRConjugateGradientMinimizer::getGSLMinimizerType() {
   return gsl_multimin_fdfminimizer_conjugate_fr;
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LevenbergMarquardtMDMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMDMinimizer.cpp
similarity index 96%
rename from Framework/CurveFitting/src/LevenbergMarquardtMDMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMDMinimizer.cpp
index 78c90dca7c807df0c1c6f18caedc0d2817164fa1..74fe28e69cdf447d7ba99f833fca8083f359adb5 100644
--- a/Framework/CurveFitting/src/LevenbergMarquardtMDMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMDMinimizer.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -16,6 +16,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 namespace {
 /// static logger object
 Kernel::Logger g_log("LevenbergMarquardMD");
@@ -39,7 +40,9 @@ LevenbergMarquardtMDMinimizer::LevenbergMarquardtMDMinimizer()
 /// Initialize minimizer, i.e. pass a function to minimize.
 void LevenbergMarquardtMDMinimizer::initialize(API::ICostFunction_sptr function,
                                                size_t) {
-  m_leastSquares = boost::dynamic_pointer_cast<CostFuncLeastSquares>(function);
+  m_leastSquares =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncLeastSquares>(
+          function);
   if (!m_leastSquares) {
     throw std::invalid_argument("Levenberg-Marquardt minimizer works only with "
                                 "least squares. Different function was given.");
@@ -286,5 +289,6 @@ double LevenbergMarquardtMDMinimizer::costFunctionVal() {
   return m_leastSquares->val();
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LevenbergMarquardtMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMinimizer.cpp
similarity index 93%
rename from Framework/CurveFitting/src/LevenbergMarquardtMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMinimizer.cpp
index 19bfbdc7c06d05379ce612f5cc73f35144e46564..df84cfc9f62124e1817e6b462e96fb64a59a7842 100644
--- a/Framework/CurveFitting/src/LevenbergMarquardtMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/LevenbergMarquardtMinimizer.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/LevenbergMarquardtMinimizer.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -16,6 +16,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 namespace {
 // Get a reference to the logger
 Kernel::Logger g_log("LevenbergMarquardtMinimizer");
@@ -40,7 +41,8 @@ void LevenbergMarquardtMinimizer::initialize(
     API::ICostFunction_sptr costFunction, size_t) {
   // set-up GSL container to be used with GSL simplex algorithm
   auto leastSquares =
-      boost::dynamic_pointer_cast<CostFuncLeastSquares>(costFunction);
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncLeastSquares>(
+          costFunction);
   if (leastSquares) {
     m_data = new GSL_FitData(leastSquares);
   } else {
@@ -140,5 +142,6 @@ void LevenbergMarquardtMinimizer::calCovarianceMatrix(double epsrel,
   gsl_multifit_covar(m_gslSolver->J, epsrel, covar);
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PRConjugateGradientMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/PRConjugateGradientMinimizer.cpp
similarity index 85%
rename from Framework/CurveFitting/src/PRConjugateGradientMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/PRConjugateGradientMinimizer.cpp
index ae9d3adaa6fb0e7841e23f563c88b6027a88685a..e208d427551e7e3ce76b176607ea017300396127 100644
--- a/Framework/CurveFitting/src/PRConjugateGradientMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/PRConjugateGradientMinimizer.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/PRConjugateGradientMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -10,6 +10,7 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
 
 // clang-format off
 ///@cond nodoc
@@ -24,5 +25,6 @@ PRConjugateGradientMinimizer::getGSLMinimizerType() {
   return gsl_multimin_fdfminimizer_conjugate_pr;
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FuncMinimizers/SimplexMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/SimplexMinimizer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..e9399ae13f134ee944285d188a5e406dc5698645
--- /dev/null
+++ b/Framework/CurveFitting/src/FuncMinimizers/SimplexMinimizer.cpp
@@ -0,0 +1,124 @@
+//----------------------------------------------------------------------
+// Includes
+//----------------------------------------------------------------------
+#include "MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncFitting.h"
+
+#include "MantidAPI/FuncMinimizerFactory.h"
+
+#include "MantidKernel/Logger.h"
+
+namespace Mantid {
+namespace CurveFitting {
+namespace FuncMinimisers {
+namespace {
+/// static logger
+Kernel::Logger g_log("SimplexMinimizer");
+}
+
+DECLARE_FUNCMINIMIZER(SimplexMinimizer, Simplex)
+
+/** Calculating cost function
+*
+* @param x :: Input function arguments
+* @param params :: Pointer to a SimplexMinimizer
+* @return Value of the cost function
+*/
+double SimplexMinimizer::fun(const gsl_vector *x, void *params) {
+  SimplexMinimizer &minimizer = *static_cast<SimplexMinimizer *>(params);
+  // update function parameters
+  if (x->data) {
+    for (size_t i = 0; i < minimizer.m_costFunction->nParams(); ++i) {
+      minimizer.m_costFunction->setParameter(i, gsl_vector_get(x, i));
+    }
+  }
+  boost::shared_ptr<CostFunctions::CostFuncFitting> fitting =
+      boost::dynamic_pointer_cast<CostFunctions::CostFuncFitting>(
+          minimizer.m_costFunction);
+  if (fitting) {
+    fitting->getFittingFunction()->applyTies();
+  }
+  return minimizer.m_costFunction->val();
+}
+
+SimplexMinimizer::SimplexMinimizer(const double epsabs)
+    : m_epsabs(epsabs), m_costFunction(), m_size(1.0), m_simplexStepSize(NULL),
+      m_startGuess(NULL), m_gslSolver(NULL) {
+  gslContainer.f = NULL;
+  gslContainer.n = -1;
+  gslContainer.params = NULL;
+}
+
+void SimplexMinimizer::initialize(API::ICostFunction_sptr function, size_t) {
+  m_costFunction = function;
+
+  const gsl_multimin_fminimizer_type *T = gsl_multimin_fminimizer_nmsimplex;
+
+  size_t np = function->nParams();
+  // step size for simplex
+  m_simplexStepSize = gsl_vector_alloc(np);
+  gsl_vector_set_all(m_simplexStepSize, m_size);
+
+  // setup simplex container
+  gslContainer.n = np;
+  gslContainer.f = &fun;
+  gslContainer.params = this;
+
+  // fill in parameter values
+  m_startGuess = gsl_vector_alloc(np);
+  for (size_t i = 0; i < np; ++i) {
+    gsl_vector_set(m_startGuess, i, function->getParameter(i));
+  }
+
+  // setup minimizer
+  m_gslSolver = gsl_multimin_fminimizer_alloc(T, np);
+  gsl_multimin_fminimizer_set(m_gslSolver, &gslContainer, m_startGuess,
+                              m_simplexStepSize);
+}
+
+/**
+ * Do one iteration.
+ * @return :: true if iterations to be continued, false if they can stop
+ */
+bool SimplexMinimizer::iterate(size_t) {
+  int status = gsl_multimin_fminimizer_iterate(m_gslSolver);
+  if (status) {
+    m_errorString = gsl_strerror(status);
+    return false;
+  }
+  double size = gsl_multimin_fminimizer_size(m_gslSolver);
+  status = gsl_multimin_test_size(size, m_epsabs);
+  if (status != GSL_CONTINUE) {
+    m_errorString = gsl_strerror(status);
+    return false;
+  }
+  return true;
+}
+
+/// resets the size
+void SimplexMinimizer::resetSize(const double &size) {
+  m_size = size;
+  clearMemory();
+  initialize(m_costFunction);
+}
+
+SimplexMinimizer::~SimplexMinimizer() { clearMemory(); }
+
+/// clear memory
+void SimplexMinimizer::clearMemory() {
+  if (m_simplexStepSize) {
+    gsl_vector_free(m_simplexStepSize);
+  }
+  if (m_startGuess) {
+    gsl_vector_free(m_startGuess);
+  }
+  if (m_gslSolver) {
+    gsl_multimin_fminimizer_free(m_gslSolver);
+  }
+}
+
+double SimplexMinimizer::costFunctionVal() { return m_gslSolver->fval; }
+
+} // namespace FuncMinimisers
+} // namespace CurveFitting
+} // namespace Mantid
diff --git a/Framework/CurveFitting/src/SteepestDescentMinimizer.cpp b/Framework/CurveFitting/src/FuncMinimizers/SteepestDescentMinimizer.cpp
similarity index 85%
rename from Framework/CurveFitting/src/SteepestDescentMinimizer.cpp
rename to Framework/CurveFitting/src/FuncMinimizers/SteepestDescentMinimizer.cpp
index be4c4380ab191ba7a3db2150ca0a14c39a179e1b..810d63841a68ab2b02ff4f0630cbcc574bfb259d 100644
--- a/Framework/CurveFitting/src/SteepestDescentMinimizer.cpp
+++ b/Framework/CurveFitting/src/FuncMinimizers/SteepestDescentMinimizer.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/SteepestDescentMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/SteepestDescentMinimizer.h"
 
 #include "MantidAPI/CostFunctionFactory.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
@@ -10,6 +10,8 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace FuncMinimisers {
+
 namespace {
 // Get a reference to the logger
 Kernel::Logger g_log("SteepestDescentMinimizer");
@@ -24,5 +26,6 @@ SteepestDescentMinimizer::getGSLMinimizerType() {
   return gsl_multimin_fdfminimizer_steepest_descent;
 }
 
+} // namespace FuncMinimisers
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Abragam.cpp b/Framework/CurveFitting/src/Functions/Abragam.cpp
similarity index 93%
rename from Framework/CurveFitting/src/Abragam.cpp
rename to Framework/CurveFitting/src/Functions/Abragam.cpp
index cd24227e3143a73979c2fca010074c8d4ea831dc..40ff74e9b61da1d1896de518896c4d6c8f5cf25a 100644
--- a/Framework/CurveFitting/src/Abragam.cpp
+++ b/Framework/CurveFitting/src/Functions/Abragam.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Abragam.h"
+#include "MantidCurveFitting/Functions/Abragam.h"
 #include "MantidAPI//FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Abragam)
@@ -61,5 +65,6 @@ void Abragam::setActiveParameter(size_t i, double value) {
     setParameter(j, value, false);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/BSpline.cpp b/Framework/CurveFitting/src/Functions/BSpline.cpp
similarity index 98%
rename from Framework/CurveFitting/src/BSpline.cpp
rename to Framework/CurveFitting/src/Functions/BSpline.cpp
index 787672bc570ab733dbe80a12c44a3384c6b0468a..670a7c8614abc0934bf5e909fe48b46bdcc26b4e 100644
--- a/Framework/CurveFitting/src/BSpline.cpp
+++ b/Framework/CurveFitting/src/Functions/BSpline.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BSpline.h"
+#include "MantidCurveFitting/Functions/BSpline.h"
 #include "MantidCurveFitting/GSLVector.h"
 #include "MantidCurveFitting/GSLMatrix.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -10,7 +10,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(BSpline)
@@ -250,5 +255,6 @@ void BSpline::getGSLBreakPoints(std::vector<double> &bp) const {
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/BackToBackExponential.cpp b/Framework/CurveFitting/src/Functions/BackToBackExponential.cpp
similarity index 96%
rename from Framework/CurveFitting/src/BackToBackExponential.cpp
rename to Framework/CurveFitting/src/Functions/BackToBackExponential.cpp
index 0c623c678de5444a75316e156d2abd584412dbf5..64a5d5aae6a6237bd4a293c78107fc7e4e7c5363 100644
--- a/Framework/CurveFitting/src/BackToBackExponential.cpp
+++ b/Framework/CurveFitting/src/Functions/BackToBackExponential.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackToBackExponential.h"
+#include "MantidCurveFitting/Functions/BackToBackExponential.h"
 #include "MantidAPI/FunctionFactory.h"
 
 #include <gsl/gsl_sf_erf.h>
@@ -12,8 +12,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(BackToBackExponential)
@@ -144,5 +148,6 @@ double BackToBackExponential::expWidth() const {
   return M_LN2 * (a + b) / (a * b);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/BackgroundFunction.cpp b/Framework/CurveFitting/src/Functions/BackgroundFunction.cpp
similarity index 78%
rename from Framework/CurveFitting/src/BackgroundFunction.cpp
rename to Framework/CurveFitting/src/Functions/BackgroundFunction.cpp
index a7d79bd6fe4109e9f58967b399e725ff16f25302..1b243cda6edc5f52619fe15152aab68edb443053 100644
--- a/Framework/CurveFitting/src/BackgroundFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/BackgroundFunction.cpp
@@ -1,12 +1,16 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/BackgroundFunction.h"
+#include "MantidCurveFitting/Functions/BackgroundFunction.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 void BackgroundFunction::fit(const std::vector<double> &X,
@@ -15,5 +19,6 @@ void BackgroundFunction::fit(const std::vector<double> &X,
   (void)Y; // Avoid compiler warning
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/BivariateNormal.cpp b/Framework/CurveFitting/src/Functions/BivariateNormal.cpp
similarity index 98%
rename from Framework/CurveFitting/src/BivariateNormal.cpp
rename to Framework/CurveFitting/src/Functions/BivariateNormal.cpp
index d48ab8555eaea9ff6adf1d9cd15e72e9d496f628..59918f5e1e5e65171378450762c01892f3c9d5f4 100644
--- a/Framework/CurveFitting/src/BivariateNormal.cpp
+++ b/Framework/CurveFitting/src/Functions/BivariateNormal.cpp
@@ -1,5 +1,5 @@
-#include "MantidCurveFitting/BivariateNormal.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/BivariateNormal.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidKernel/PhysicalConstants.h"
 #include "MantidAPI/ParameterTie.h"
@@ -17,6 +17,10 @@ using namespace Mantid::API;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace Constraints;
 
 namespace {
 /// static logger
@@ -679,5 +683,6 @@ double BivariateNormal::initCoeff(const MantidVec &D, const MantidVec &X,
   return penalty;
 }
 
+} // namespace Functions
 } // namespace curveFitting
 } // namespaceMantid
diff --git a/Framework/CurveFitting/src/Bk2BkExpConvPV.cpp b/Framework/CurveFitting/src/Functions/Bk2BkExpConvPV.cpp
similarity index 98%
rename from Framework/CurveFitting/src/Bk2BkExpConvPV.cpp
rename to Framework/CurveFitting/src/Functions/Bk2BkExpConvPV.cpp
index 7052c100cf82ebd824ef254c3b1495f466d269af..d3f4fcb35aae249b2971879a6f362d0066251462 100644
--- a/Framework/CurveFitting/src/Bk2BkExpConvPV.cpp
+++ b/Framework/CurveFitting/src/Functions/Bk2BkExpConvPV.cpp
@@ -1,18 +1,22 @@
 #include <cmath>
 
-#include "MantidCurveFitting/Bk2BkExpConvPV.h"
+#include "MantidCurveFitting/Functions/Bk2BkExpConvPV.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
 
 #include <gsl/gsl_sf_erf.h>
 
 using namespace Mantid::Kernel;
+
 using namespace Mantid::API;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 namespace {
 /// static logger
 Kernel::Logger g_log("Bk2BkExpConvPV");
@@ -250,4 +254,5 @@ void Bk2BkExpConvPV::calHandEta(double sigma2, double gamma, double &H,
 }
 
 } // namespace Mantid
+} // namespace Functions
 } // namespace CurveFitting
diff --git a/Framework/CurveFitting/src/ChebfunBase.cpp b/Framework/CurveFitting/src/Functions/ChebfunBase.cpp
similarity index 99%
rename from Framework/CurveFitting/src/ChebfunBase.cpp
rename to Framework/CurveFitting/src/Functions/ChebfunBase.cpp
index 3a1844b95636baf0adf96fa6b8e88bec092e97a4..4f25c57ba462bd4071272fba1c2ba8f17684dc99 100644
--- a/Framework/CurveFitting/src/ChebfunBase.cpp
+++ b/Framework/CurveFitting/src/Functions/ChebfunBase.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ChebfunBase.h"
+#include "MantidCurveFitting/Functions/ChebfunBase.h"
 #include "MantidAPI/IFunction1D.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -19,6 +19,9 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 // Set the comparison tolerance.
 const double ChebfunBase::g_tolerance = 1e-15;
@@ -297,6 +300,7 @@ ChebfunBase::evalVector(const std::vector<double> &x,
  */
 void ChebfunBase::derivative(const std::vector<double> &a,
                              std::vector<double> &aout) const {
+
   using namespace std::placeholders;
   if (a.size() != m_x.size()) {
     throw std::invalid_argument(
@@ -331,6 +335,7 @@ void ChebfunBase::derivative(const std::vector<double> &a,
  */
 ChebfunBase_sptr ChebfunBase::integral(const std::vector<double> &a,
                                        std::vector<double> &aout) const {
+
   using namespace std::placeholders;
   if (a.size() != m_x.size()) {
     throw std::invalid_argument(
@@ -926,5 +931,6 @@ ChebfunBase::smooth(const std::vector<double> &xvalues,
   return y;
 }
 
+} // Functions
 } // CurveFitting
 } // Mantid
diff --git a/Framework/CurveFitting/src/Chebyshev.cpp b/Framework/CurveFitting/src/Functions/Chebyshev.cpp
similarity index 95%
rename from Framework/CurveFitting/src/Chebyshev.cpp
rename to Framework/CurveFitting/src/Functions/Chebyshev.cpp
index 7da4e1d0b8837453722a2f6952a7becc1c442e98..9395ced590de45f8a22db3d0d092e5b816334a0f 100644
--- a/Framework/CurveFitting/src/Chebyshev.cpp
+++ b/Framework/CurveFitting/src/Functions/Chebyshev.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Chebyshev.h"
+#include "MantidCurveFitting/Functions/Chebyshev.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <boost/lexical_cast.hpp>
 
@@ -9,8 +9,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Chebyshev)
@@ -99,5 +103,6 @@ void Chebyshev::setAttribute(const std::string &attName,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ComptonPeakProfile.cpp b/Framework/CurveFitting/src/Functions/ComptonPeakProfile.cpp
similarity index 96%
rename from Framework/CurveFitting/src/ComptonPeakProfile.cpp
rename to Framework/CurveFitting/src/Functions/ComptonPeakProfile.cpp
index 89aaaab815f4d755a8cf390ded7d15b7c16083cd..c10c9bf5a8906fc1f6c2e66630ab2079cee8bb44 100644
--- a/Framework/CurveFitting/src/ComptonPeakProfile.cpp
+++ b/Framework/CurveFitting/src/Functions/ComptonPeakProfile.cpp
@@ -1,14 +1,17 @@
 //-----------------------------------------------------------------------------
 // Includes
 //-----------------------------------------------------------------------------
-#include "MantidCurveFitting/ComptonPeakProfile.h"
-#include "MantidCurveFitting/ConvertToYSpace.h"
+#include "MantidCurveFitting/Functions/ComptonPeakProfile.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
 #include "MantidAPI/FunctionFactory.h"
 
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting::Algorithms;
 
 DECLARE_FUNCTION(ComptonPeakProfile)
 
@@ -82,6 +85,7 @@ void ComptonPeakProfile::function1D(double *out, const double *xValues,
  */
 void ComptonPeakProfile::setUpForFit() {
   // Voigt & Gaussian
+
   using namespace Mantid::API;
   m_gauss = boost::dynamic_pointer_cast<IPeakFunction>(
       FunctionFactory::Instance().createFunction("Gaussian"));
@@ -165,5 +169,6 @@ void ComptonPeakProfile::setAttribute(const std::string &name,
     m_voigtCutOff = value.asDouble();
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ComptonProfile.cpp b/Framework/CurveFitting/src/Functions/ComptonProfile.cpp
similarity index 94%
rename from Framework/CurveFitting/src/ComptonProfile.cpp
rename to Framework/CurveFitting/src/Functions/ComptonProfile.cpp
index b7d2ede6cb7e7a10737f3f58823e84be996deceb..f93325fcd70707d6667bbe5d1e0bfab7c89e5a2c 100644
--- a/Framework/CurveFitting/src/ComptonProfile.cpp
+++ b/Framework/CurveFitting/src/Functions/ComptonProfile.cpp
@@ -1,13 +1,17 @@
 //-----------------------------------------------------------------------------
 // Includes
 //-----------------------------------------------------------------------------
-#include "MantidCurveFitting/ComptonProfile.h"
-#include "MantidCurveFitting/ConvertToYSpace.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <gsl/gsl_poly.h>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace CurveFitting::Algorithms;
 
 namespace {
 ///@cond
@@ -24,6 +28,7 @@ ComptonProfile::ComptonProfile()
     : API::ParamFunction(), API::IFunction1D(), m_log("ComptonProfile"),
       m_wsIndex(0), m_mass(0.0), m_voigt(), m_resolutionFunction(), m_yspace(),
       m_modQ(), m_e0() {
+
   using namespace Mantid::API;
   m_resolutionFunction = boost::dynamic_pointer_cast<VesuvioResolution>(
       FunctionFactory::Instance().createFunction("VesuvioResolution"));
@@ -53,6 +58,7 @@ void ComptonProfile::function1D(double *out, const double *xValues,
  * Creates the internal caches
  */
 void ComptonProfile::setUpForFit() {
+
   using namespace Mantid::API;
   m_voigt = boost::dynamic_pointer_cast<IPeakFunction>(
       FunctionFactory::Instance().createFunction("Voigt"));
@@ -92,7 +98,7 @@ void ComptonProfile::setMatrixWorkspace(
   m_resolutionFunction->setAttributeValue("Mass", m_mass);
   m_resolutionFunction->setMatrixWorkspace(workspace, wsIndex, startX, endX);
 
-  DetectorParams detpar =
+  Algorithms::DetectorParams detpar =
       ConvertToYSpace::getDetectorParameters(workspace, m_wsIndex);
   this->cacheYSpaceValues(workspace->readX(m_wsIndex),
                           workspace->isHistogramData(), detpar);
@@ -100,7 +106,7 @@ void ComptonProfile::setMatrixWorkspace(
 
 void ComptonProfile::cacheYSpaceValues(const std::vector<double> &tseconds,
                                        const bool isHistogram,
-                                       const DetectorParams &detpar,
+                                       const Algorithms::DetectorParams &detpar,
                                        const ResolutionParams &respar) {
   m_resolutionFunction->cacheResolutionComponents(detpar, respar);
   this->cacheYSpaceValues(tseconds, isHistogram, detpar);
@@ -111,9 +117,9 @@ void ComptonProfile::cacheYSpaceValues(const std::vector<double> &tseconds,
  * @param isHistogram True if histogram tof values have been passed in
  * @param detpar Structure containing detector parameters
  */
-void ComptonProfile::cacheYSpaceValues(const std::vector<double> &tseconds,
-                                       const bool isHistogram,
-                                       const DetectorParams &detpar) {
+void ComptonProfile::cacheYSpaceValues(
+    const std::vector<double> &tseconds, const bool isHistogram,
+    const Algorithms::DetectorParams &detpar) {
   // ------ Fixed coefficients related to resolution & Y-space transforms
   // ------------------
   const double mevToK = PhysicalConstants::E_mev_toNeutronWavenumberSq;
@@ -235,5 +241,6 @@ void ComptonProfile::voigtApproxDiff(std::vector<double> &voigtDiff,
                    2.0 * std::pow(epsilon, 3))); // divided by (2eps^3)
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ComptonScatteringCountRate.cpp b/Framework/CurveFitting/src/Functions/ComptonScatteringCountRate.cpp
similarity index 99%
rename from Framework/CurveFitting/src/ComptonScatteringCountRate.cpp
rename to Framework/CurveFitting/src/Functions/ComptonScatteringCountRate.cpp
index 67051c8d3166b3db68469c9919495d4f958e1e87..fa9ed893cb00c3a6785ce0b2285aafa9fe457461 100644
--- a/Framework/CurveFitting/src/ComptonScatteringCountRate.cpp
+++ b/Framework/CurveFitting/src/Functions/ComptonScatteringCountRate.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ComptonScatteringCountRate.h"
+#include "MantidCurveFitting/Functions/ComptonScatteringCountRate.h"
 #include "MantidCurveFitting/AugmentedLagrangianOptimizer.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
@@ -10,6 +10,9 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 using Kernel::Logger;
 
 namespace {
@@ -445,5 +448,6 @@ void ComptonScatteringCountRate::createEqualityCM(const size_t nmasses) {
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Convolution.cpp b/Framework/CurveFitting/src/Functions/Convolution.cpp
similarity index 98%
rename from Framework/CurveFitting/src/Convolution.cpp
rename to Framework/CurveFitting/src/Functions/Convolution.cpp
index db1f62ad49f2d0a9f2f960e59b4b507e5f3e0472..00ed29d4c139058504875f9b573db92e8002d028 100644
--- a/Framework/CurveFitting/src/Convolution.cpp
+++ b/Framework/CurveFitting/src/Functions/Convolution.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Convolution.h"
-#include "MantidCurveFitting/DeltaFunction.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
+#include "MantidCurveFitting/Functions/DeltaFunction.h"
 #include "MantidAPI/IFunction1D.h"
 #include "MantidAPI/FunctionFactory.h"
 
@@ -20,8 +20,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Convolution)
@@ -297,5 +301,6 @@ void Convolution::refreshResolution() const {
   m_resolution.clear();
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/CubicSpline.cpp b/Framework/CurveFitting/src/Functions/CubicSpline.cpp
similarity index 98%
rename from Framework/CurveFitting/src/CubicSpline.cpp
rename to Framework/CurveFitting/src/Functions/CubicSpline.cpp
index b955d04215d02d904e00193dfd0cddfeba7079f4..d13cb126fdd0971edc5a8a2b9f08aa8b925b32c5 100644
--- a/Framework/CurveFitting/src/CubicSpline.cpp
+++ b/Framework/CurveFitting/src/Functions/CubicSpline.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/CubicSpline.h"
+#include "MantidCurveFitting/Functions/CubicSpline.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidKernel/Logger.h"
 
@@ -12,12 +12,16 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 namespace {
 /// static logger
 Kernel::Logger g_log("CubicSpline");
 }
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(CubicSpline)
@@ -358,5 +362,6 @@ void CubicSpline::reallocGSLObjects(const int n) {
  *
  */
 CubicSpline::~CubicSpline() {}
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DeltaFunction.cpp b/Framework/CurveFitting/src/Functions/DeltaFunction.cpp
similarity index 87%
rename from Framework/CurveFitting/src/DeltaFunction.cpp
rename to Framework/CurveFitting/src/Functions/DeltaFunction.cpp
index 883e0ed542810809d9c777fe98c4c5b15392dcf1..aa26ab1c786ff2f8747568353edd6f4078923b67 100644
--- a/Framework/CurveFitting/src/DeltaFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/DeltaFunction.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DeltaFunction.h"
+#include "MantidCurveFitting/Functions/DeltaFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <algorithm>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(DeltaFunction)
@@ -32,5 +36,6 @@ void DeltaFunction::functionDeriv1D(Jacobian *out, const double *xValues,
   std::runtime_error("Cannot compute derivative of a delta function");
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DiffRotDiscreteCircle.cpp b/Framework/CurveFitting/src/Functions/DiffRotDiscreteCircle.cpp
similarity index 97%
rename from Framework/CurveFitting/src/DiffRotDiscreteCircle.cpp
rename to Framework/CurveFitting/src/Functions/DiffRotDiscreteCircle.cpp
index ceb07007e2621508b37ecb0b0dcc4e22bce68a79..f295573909e3ba7653a4aad0a806f57f97d95496 100644
--- a/Framework/CurveFitting/src/DiffRotDiscreteCircle.cpp
+++ b/Framework/CurveFitting/src/Functions/DiffRotDiscreteCircle.cpp
@@ -1,12 +1,12 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DiffRotDiscreteCircle.h"
+#include "MantidCurveFitting/Functions/DiffRotDiscreteCircle.h"
 
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidAPI/ParameterTie.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidGeometry/IDetector.h"
 #include "MantidKernel/Exception.h"
 #include "MantidKernel/UnitConversion.h"
@@ -20,8 +20,13 @@ Mantid::Kernel::Logger g_log("DiffSphere");
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace Constraints;
 
 using namespace API;
+
 using namespace Geometry;
 
 DECLARE_FUNCTION(ElasticDiffRotDiscreteCircle)
@@ -247,5 +252,6 @@ void DiffRotDiscreteCircle::init() {
   applyTies();
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DiffSphere.cpp b/Framework/CurveFitting/src/Functions/DiffSphere.cpp
similarity index 98%
rename from Framework/CurveFitting/src/DiffSphere.cpp
rename to Framework/CurveFitting/src/Functions/DiffSphere.cpp
index bf7d4a803090902fc2df9b2c8675326f61196db4..19519493021e0af64a1816b461d1d68332fdbaa8 100644
--- a/Framework/CurveFitting/src/DiffSphere.cpp
+++ b/Framework/CurveFitting/src/Functions/DiffSphere.cpp
@@ -1,12 +1,12 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DiffSphere.h"
+#include "MantidCurveFitting/Functions/DiffSphere.h"
 
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidAPI/ParameterTie.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidGeometry/IDetector.h"
 #include "MantidKernel/Exception.h"
 #include "MantidKernel/UnitConversion.h"
@@ -22,9 +22,15 @@ Mantid::Kernel::Logger g_log("DiffSphere");
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace Constraints;
 
 using namespace API;
+
 using namespace Geometry;
+
 using namespace Kernel;
 
 DECLARE_FUNCTION(ElasticDiffSphere)
@@ -351,5 +357,6 @@ void DiffSphere::init() {
   applyTies();
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/DynamicKuboToyabe.cpp b/Framework/CurveFitting/src/Functions/DynamicKuboToyabe.cpp
similarity index 98%
rename from Framework/CurveFitting/src/DynamicKuboToyabe.cpp
rename to Framework/CurveFitting/src/Functions/DynamicKuboToyabe.cpp
index e62d0ba82c49eb9694c16d02874baf371cb0b1c5..e90d834562d8ce0768ab38f196a97d142b2686e8 100644
--- a/Framework/CurveFitting/src/DynamicKuboToyabe.cpp
+++ b/Framework/CurveFitting/src/Functions/DynamicKuboToyabe.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/DynamicKuboToyabe.h"
+#include "MantidCurveFitting/Functions/DynamicKuboToyabe.h"
 #include "MantidAPI/Jacobian.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
@@ -9,8 +9,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(DynamicKuboToyabe)
@@ -375,5 +379,6 @@ bool DynamicKuboToyabe::hasAttribute(const std::string &attName) const {
   return attName == "BinWidth";
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/EndErfc.cpp b/Framework/CurveFitting/src/Functions/EndErfc.cpp
similarity index 91%
rename from Framework/CurveFitting/src/EndErfc.cpp
rename to Framework/CurveFitting/src/Functions/EndErfc.cpp
index 7d5de37a67dd28340214068459843a2f09d31b99..ed8101f7d9a15b3a8c392225b17af219009fcc88 100644
--- a/Framework/CurveFitting/src/EndErfc.cpp
+++ b/Framework/CurveFitting/src/Functions/EndErfc.cpp
@@ -1,15 +1,19 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/EndErfc.h"
+#include "MantidCurveFitting/Functions/EndErfc.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 #include <gsl/gsl_sf_erf.h>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(EndErfc)
@@ -51,5 +55,6 @@ void EndErfc::setActiveParameter(size_t i, double value) {
     setParameter(j, value, false);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ExpDecay.cpp b/Framework/CurveFitting/src/Functions/ExpDecay.cpp
similarity index 90%
rename from Framework/CurveFitting/src/ExpDecay.cpp
rename to Framework/CurveFitting/src/Functions/ExpDecay.cpp
index c5d92311a04e1c729ccb877ec42cf047f9a2d070..3f26962c469291157c260c23e1c1c15ea63bf4c9 100644
--- a/Framework/CurveFitting/src/ExpDecay.cpp
+++ b/Framework/CurveFitting/src/Functions/ExpDecay.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/ExpDecay.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(ExpDecay)
@@ -41,5 +45,6 @@ void ExpDecay::functionDeriv1D(Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ExpDecayMuon.cpp b/Framework/CurveFitting/src/Functions/ExpDecayMuon.cpp
similarity index 90%
rename from Framework/CurveFitting/src/ExpDecayMuon.cpp
rename to Framework/CurveFitting/src/Functions/ExpDecayMuon.cpp
index 2f0867e8c10b8111da7e4de914c9bcc43a18d802..748b7ed6bae725f0eeb5eb5127f2fa88c28986da 100644
--- a/Framework/CurveFitting/src/ExpDecayMuon.cpp
+++ b/Framework/CurveFitting/src/Functions/ExpDecayMuon.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/ExpDecayMuon.h"
+#include "MantidCurveFitting/Functions/ExpDecayMuon.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(ExpDecayMuon)
@@ -41,5 +45,6 @@ void ExpDecayMuon::functionDeriv1D(Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ExpDecayOsc.cpp b/Framework/CurveFitting/src/Functions/ExpDecayOsc.cpp
similarity index 94%
rename from Framework/CurveFitting/src/ExpDecayOsc.cpp
rename to Framework/CurveFitting/src/Functions/ExpDecayOsc.cpp
index f3d677feee5204237636b8284c4446584b5164e0..53713374e6a8df68779401578a7d827b97810047 100644
--- a/Framework/CurveFitting/src/ExpDecayOsc.cpp
+++ b/Framework/CurveFitting/src/Functions/ExpDecayOsc.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/ExpDecayOsc.h"
+#include "MantidCurveFitting/Functions/ExpDecayOsc.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(ExpDecayOsc)
@@ -68,5 +72,6 @@ void ExpDecayOsc::setActiveParameter(size_t i, double value) {
     setParameter(j, value, false);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/FlatBackground.cpp b/Framework/CurveFitting/src/Functions/FlatBackground.cpp
similarity index 92%
rename from Framework/CurveFitting/src/FlatBackground.cpp
rename to Framework/CurveFitting/src/Functions/FlatBackground.cpp
index d1fc5c08ad6a7e1051cf4124ec6cf58256f21a3b..e73d11ecb56b9cefc4505bb0ebcafdd6689f3f31 100644
--- a/Framework/CurveFitting/src/FlatBackground.cpp
+++ b/Framework/CurveFitting/src/Functions/FlatBackground.cpp
@@ -1,12 +1,16 @@
-#include "MantidCurveFitting/FlatBackground.h"
+#include "MantidCurveFitting/Functions/FlatBackground.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidKernel/System.h"
 
 using namespace Mantid::Kernel;
+
 using namespace Mantid::API;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 DECLARE_FUNCTION(FlatBackground)
 
 //----------------------------------------------------------------------------------------------
@@ -60,4 +64,5 @@ void FlatBackground::functionDeriv1D(API::Jacobian *out, const double *xValues,
 }
 
 } // namespace Mantid
+} // namespace Functions
 } // namespace CurveFitting
diff --git a/Framework/CurveFitting/src/FullprofPolynomial.cpp b/Framework/CurveFitting/src/Functions/FullprofPolynomial.cpp
similarity index 97%
rename from Framework/CurveFitting/src/FullprofPolynomial.cpp
rename to Framework/CurveFitting/src/Functions/FullprofPolynomial.cpp
index c11007ea6c0ff153321d028c68eee5b9edd990b4..0c694afb8b925a73e6614f2758d64f771725237f 100644
--- a/Framework/CurveFitting/src/FullprofPolynomial.cpp
+++ b/Framework/CurveFitting/src/Functions/FullprofPolynomial.cpp
@@ -1,9 +1,12 @@
-#include "MantidCurveFitting/FullprofPolynomial.h"
+#include "MantidCurveFitting/Functions/FullprofPolynomial.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <boost/lexical_cast.hpp>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(FullprofPolynomial)
 
@@ -161,5 +164,6 @@ bool FullprofPolynomial::hasAttribute(const std::string &attName) const {
   return has;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/GausDecay.cpp b/Framework/CurveFitting/src/Functions/GausDecay.cpp
similarity index 91%
rename from Framework/CurveFitting/src/GausDecay.cpp
rename to Framework/CurveFitting/src/Functions/GausDecay.cpp
index 1497dbd6af7153865b61fb19ed45d4b0fc69f204..62e7fa7b723c6c9d88c9175bdd8a271d0a88c962 100644
--- a/Framework/CurveFitting/src/GausDecay.cpp
+++ b/Framework/CurveFitting/src/Functions/GausDecay.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/GausDecay.h"
+#include "MantidCurveFitting/Functions/GausDecay.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(GausDecay)
@@ -51,5 +55,6 @@ void GausDecay::setActiveParameter(size_t i, double value) {
     setParameter(j, value, false);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/GausOsc.cpp b/Framework/CurveFitting/src/Functions/GausOsc.cpp
similarity index 94%
rename from Framework/CurveFitting/src/GausOsc.cpp
rename to Framework/CurveFitting/src/Functions/GausOsc.cpp
index fbf341f190a4665c037e4d8cdc935aed2ffbdac1..54b17aec67d9e64e675c0d28e4054c6f908aebb9 100644
--- a/Framework/CurveFitting/src/GausOsc.cpp
+++ b/Framework/CurveFitting/src/Functions/GausOsc.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/GausOsc.h"
+#include "MantidCurveFitting/Functions/GausOsc.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(GausOsc)
@@ -69,5 +73,6 @@ void GausOsc::setActiveParameter(size_t i, double value) {
     setParameter(j, value, false);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Gaussian.cpp b/Framework/CurveFitting/src/Functions/Gaussian.cpp
similarity index 94%
rename from Framework/CurveFitting/src/Gaussian.cpp
rename to Framework/CurveFitting/src/Functions/Gaussian.cpp
index 886d31e3f3ef9c0abe4a87030d2e5f2621668f2e..eeacee84e14d13cca2f551c7fb8dd0a864134e12 100644
--- a/Framework/CurveFitting/src/Gaussian.cpp
+++ b/Framework/CurveFitting/src/Functions/Gaussian.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Gaussian.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
 #include "MantidAPI/FunctionFactory.h"
 
 #include <cmath>
@@ -9,8 +9,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Gaussian)
@@ -69,5 +73,6 @@ double Gaussian::activeParameter(size_t i) const {
     return getParameter(i);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/GaussianComptonProfile.cpp b/Framework/CurveFitting/src/Functions/GaussianComptonProfile.cpp
similarity index 96%
rename from Framework/CurveFitting/src/GaussianComptonProfile.cpp
rename to Framework/CurveFitting/src/Functions/GaussianComptonProfile.cpp
index 3cc941c99647c2c51097a6c5f2f81326a2611cc0..23af0e475ee0caf438272c175d588066b1cb2111 100644
--- a/Framework/CurveFitting/src/GaussianComptonProfile.cpp
+++ b/Framework/CurveFitting/src/Functions/GaussianComptonProfile.cpp
@@ -1,13 +1,16 @@
 //------------------------------------------------------------------------------------------------
 // Includes
 //------------------------------------------------------------------------------------------------
-#include "MantidCurveFitting/GaussianComptonProfile.h"
+#include "MantidCurveFitting/Functions/GaussianComptonProfile.h"
 #include "MantidAPI/FunctionFactory.h"
 
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 DECLARE_FUNCTION(GaussianComptonProfile)
 
 const char *WIDTH_PARAM = "Width";
@@ -112,5 +115,6 @@ void GaussianComptonProfile::massProfile(double *result, const size_t nData,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/GramCharlierComptonProfile.cpp b/Framework/CurveFitting/src/Functions/GramCharlierComptonProfile.cpp
similarity index 98%
rename from Framework/CurveFitting/src/GramCharlierComptonProfile.cpp
rename to Framework/CurveFitting/src/Functions/GramCharlierComptonProfile.cpp
index 7003021e27ecf3f23f1e331fb07d307eb1c9db38..dcefc759c3041571c04728526393f096af35dbae 100644
--- a/Framework/CurveFitting/src/GramCharlierComptonProfile.cpp
+++ b/Framework/CurveFitting/src/Functions/GramCharlierComptonProfile.cpp
@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------------------------
 // Includes
 //------------------------------------------------------------------------------------------------
-#include "MantidCurveFitting/GramCharlierComptonProfile.h"
+#include "MantidCurveFitting/Functions/GramCharlierComptonProfile.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidKernel/Math/Distributions/HermitePolynomials.h"
 
@@ -14,6 +14,9 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 // Register into factory
 DECLARE_FUNCTION(GramCharlierComptonProfile)
 
@@ -247,6 +250,7 @@ size_t GramCharlierComptonProfile::fillConstraintMatrix(
 void GramCharlierComptonProfile::massProfile(double *result,
                                              const size_t nData) const {
   UNUSED_ARG(nData);
+
   using namespace Mantid::Kernel;
 
   // Hermite expansion (only even terms) + FSE term
@@ -275,6 +279,7 @@ void GramCharlierComptonProfile::massProfile(double *result,
  */
 void GramCharlierComptonProfile::addMassProfile(
     double *result, const unsigned int npoly) const {
+
   using namespace Mantid::Kernel;
 
   const double amp(1.0), wg(getParameter(WIDTH_PARAM));
@@ -300,6 +305,7 @@ void GramCharlierComptonProfile::addMassProfile(
  */
 void GramCharlierComptonProfile::addFSETerm(std::vector<double> &lhs) const {
   assert(static_cast<size_t>(NFINE_Y) == lhs.size());
+
   using namespace Mantid::Kernel;
 
   const double amp(1.0), wg(getParameter(WIDTH_PARAM));
@@ -362,7 +368,7 @@ void GramCharlierComptonProfile::setMatrixWorkspace(
  */
 void GramCharlierComptonProfile::cacheYSpaceValues(
     const std::vector<double> &tseconds, const bool isHistogram,
-    const DetectorParams &detpar) {
+    const Algorithms::DetectorParams &detpar) {
   ComptonProfile::cacheYSpaceValues(tseconds, isHistogram,
                                     detpar); // base-class calculations
 
@@ -438,5 +444,6 @@ void GramCharlierComptonProfile::cacheYSpaceValues(
                                   // vector
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/IkedaCarpenterPV.cpp b/Framework/CurveFitting/src/Functions/IkedaCarpenterPV.cpp
similarity index 97%
rename from Framework/CurveFitting/src/IkedaCarpenterPV.cpp
rename to Framework/CurveFitting/src/Functions/IkedaCarpenterPV.cpp
index 527a9c39698081e58d8acc3d322ee20b35585697..519f78976bd762d60dcdab2afc56eedbceba0123 100644
--- a/Framework/CurveFitting/src/IkedaCarpenterPV.cpp
+++ b/Framework/CurveFitting/src/Functions/IkedaCarpenterPV.cpp
@@ -1,8 +1,8 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/IkedaCarpenterPV.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/IkedaCarpenterPV.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidCurveFitting/SpecialFunctionSupport.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -21,6 +21,9 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 namespace {
 /// static logger
@@ -28,8 +31,11 @@ Kernel::Logger g_log("IkedaCarpenterPV");
 }
 
 using namespace Kernel;
-using namespace SpecialFunctionSupport;
+
+using namespace CurveFitting::SpecialFunctionSupport;
+
 using namespace Geometry;
+using namespace Constraints;
 
 DECLARE_FUNCTION(IkedaCarpenterPV)
 
@@ -366,5 +372,6 @@ void IkedaCarpenterPV::functionDeriv(const API::FunctionDomain &domain,
   calNumericalDeriv(domain, jacobian);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LinearBackground.cpp b/Framework/CurveFitting/src/Functions/LinearBackground.cpp
similarity index 94%
rename from Framework/CurveFitting/src/LinearBackground.cpp
rename to Framework/CurveFitting/src/Functions/LinearBackground.cpp
index 5961d95a20ed370a835d6464e891ba1d56d27db1..de365f0d88caddcebecc73905b980b9156f64983 100644
--- a/Framework/CurveFitting/src/LinearBackground.cpp
+++ b/Framework/CurveFitting/src/Functions/LinearBackground.cpp
@@ -1,13 +1,17 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/LinearBackground.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(LinearBackground)
@@ -79,5 +83,6 @@ void LinearBackground::fit(const std::vector<double> &X,
   setParameter("A1", a1);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/LogNormal.cpp b/Framework/CurveFitting/src/Functions/LogNormal.cpp
similarity index 95%
rename from Framework/CurveFitting/src/LogNormal.cpp
rename to Framework/CurveFitting/src/Functions/LogNormal.cpp
index e7cba5f58ea4f41da6946e3452617b53bfd48fbf..85e24ebfcf8ecd2a6705f68c61793754a6851b91 100644
--- a/Framework/CurveFitting/src/LogNormal.cpp
+++ b/Framework/CurveFitting/src/Functions/LogNormal.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/LogNormal.h"
+#include "MantidCurveFitting/Functions/LogNormal.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(LogNormal)
@@ -78,5 +82,6 @@ void LogNormal::functionDeriv1D(API::Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Lorentzian.cpp b/Framework/CurveFitting/src/Functions/Lorentzian.cpp
similarity index 94%
rename from Framework/CurveFitting/src/Lorentzian.cpp
rename to Framework/CurveFitting/src/Functions/Lorentzian.cpp
index 8d58c9a3915b9d7bd87d8d9da9be2a6f5ae70be0..0b5d4b534624e37d6e81d22b099809d16d1ac346 100644
--- a/Framework/CurveFitting/src/Lorentzian.cpp
+++ b/Framework/CurveFitting/src/Functions/Lorentzian.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Lorentzian.h"
+#include "MantidCurveFitting/Functions/Lorentzian.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Lorentzian)
@@ -75,5 +79,6 @@ void Lorentzian::functionDerivLocal(Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Lorentzian1D.cpp b/Framework/CurveFitting/src/Functions/Lorentzian1D.cpp
similarity index 95%
rename from Framework/CurveFitting/src/Lorentzian1D.cpp
rename to Framework/CurveFitting/src/Functions/Lorentzian1D.cpp
index 763d9a92ed152d2f081d9dfb6ae8bdfe627b537f..1c19669665cef0be1ff816dc5d58c0074c2a8465 100644
--- a/Framework/CurveFitting/src/Lorentzian1D.cpp
+++ b/Framework/CurveFitting/src/Functions/Lorentzian1D.cpp
@@ -1,13 +1,16 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Lorentzian1D.h"
+#include "MantidCurveFitting/Functions/Lorentzian1D.h"
 #include <gsl/gsl_sf_erf.h>
 #include <gsl/gsl_multifit_nlin.h>
 #include "MantidKernel/BoundedValidator.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 using API::Jacobian;
 
 // Register the class into the algorithm factory
@@ -69,5 +72,6 @@ void Lorentzian1D::functionDeriv(const double *in, Jacobian *out,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/MuonFInteraction.cpp b/Framework/CurveFitting/src/Functions/MuonFInteraction.cpp
similarity index 90%
rename from Framework/CurveFitting/src/MuonFInteraction.cpp
rename to Framework/CurveFitting/src/Functions/MuonFInteraction.cpp
index a11f82c92ae02a68df3adeb7030eeeed61e72b4b..4fcb0672c65bf56ee6691a3b0880d4d2f23fcba0 100644
--- a/Framework/CurveFitting/src/MuonFInteraction.cpp
+++ b/Framework/CurveFitting/src/Functions/MuonFInteraction.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/MuonFInteraction.h"
+#include "MantidCurveFitting/Functions/MuonFInteraction.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(MuonFInteraction)
@@ -40,5 +44,6 @@ void MuonFInteraction::function1D(double *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/NeutronBk2BkExpConvPVoigt.cpp b/Framework/CurveFitting/src/Functions/NeutronBk2BkExpConvPVoigt.cpp
similarity index 99%
rename from Framework/CurveFitting/src/NeutronBk2BkExpConvPVoigt.cpp
rename to Framework/CurveFitting/src/Functions/NeutronBk2BkExpConvPVoigt.cpp
index 9f4d315690da912d41a074727fa5cb012015d8a3..c451d8d528adedf27626917dd0b574be8fffcbda 100644
--- a/Framework/CurveFitting/src/NeutronBk2BkExpConvPVoigt.cpp
+++ b/Framework/CurveFitting/src/Functions/NeutronBk2BkExpConvPVoigt.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/ParamFunction.h"
 #include "MantidKernel/EmptyValues.h"
@@ -17,6 +17,9 @@ using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 namespace {
 /// static logger
 Kernel::Logger g_log("NeutronBk2BkExpConvPV");
@@ -504,5 +507,6 @@ double NeutronBk2BkExpConvPVoigt::calOmega(const double x, const double eta,
   return omega;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PawleyFunction.cpp b/Framework/CurveFitting/src/Functions/PawleyFunction.cpp
similarity index 98%
rename from Framework/CurveFitting/src/PawleyFunction.cpp
rename to Framework/CurveFitting/src/Functions/PawleyFunction.cpp
index ab4c06fb473da7c04457368a46baeed882992d86..2f4231d00f45460479cb798489372750eca5f56c 100644
--- a/Framework/CurveFitting/src/PawleyFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/PawleyFunction.cpp
@@ -1,9 +1,9 @@
-#include "MantidCurveFitting/PawleyFunction.h"
+#include "MantidCurveFitting/Functions/PawleyFunction.h"
 
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
 
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 #include "MantidKernel/UnitConversion.h"
 #include "MantidKernel/UnitFactory.h"
@@ -13,11 +13,17 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace Constraints;
 
 DECLARE_FUNCTION(PawleyParameterFunction)
 
 using namespace API;
+
 using namespace Geometry;
+
 using namespace Kernel;
 
 /// Constructor
@@ -572,5 +578,6 @@ void PawleyFunction::beforeDecoratedFunctionSet(const API::IFunction_sptr &fn) {
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PeakParameterFunction.cpp b/Framework/CurveFitting/src/Functions/PeakParameterFunction.cpp
similarity index 93%
rename from Framework/CurveFitting/src/PeakParameterFunction.cpp
rename to Framework/CurveFitting/src/Functions/PeakParameterFunction.cpp
index 068e7d5440dcf0f2e3dae8b5ff1cc009a4d61274..5991f2ad484d034df9434b38cb1a7a29329fc232 100644
--- a/Framework/CurveFitting/src/PeakParameterFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/PeakParameterFunction.cpp
@@ -1,9 +1,12 @@
-#include "MantidCurveFitting/PeakParameterFunction.h"
+#include "MantidCurveFitting/Functions/PeakParameterFunction.h"
 #include "MantidAPI/IPeakFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace API;
 
@@ -59,5 +62,6 @@ void PeakParameterFunction::beforeDecoratedFunctionSet(
   m_peakFunction = peakFunction;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Polynomial.cpp b/Framework/CurveFitting/src/Functions/Polynomial.cpp
similarity index 97%
rename from Framework/CurveFitting/src/Polynomial.cpp
rename to Framework/CurveFitting/src/Functions/Polynomial.cpp
index d6b20c93df577952f06af3527ebccffd30c9a685..800902e4ffabba0586b272a7f9cf0ef3145609f5 100644
--- a/Framework/CurveFitting/src/Polynomial.cpp
+++ b/Framework/CurveFitting/src/Functions/Polynomial.cpp
@@ -1,14 +1,18 @@
-#include "MantidCurveFitting/Polynomial.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <boost/lexical_cast.hpp>
 
 using namespace Mantid::Kernel;
+
 using namespace Mantid::API;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(Polynomial)
 
@@ -154,5 +158,6 @@ bool Polynomial::hasAttribute(const std::string &attName) const {
   return attName == "n";
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ProcessBackground.cpp b/Framework/CurveFitting/src/Functions/ProcessBackground.cpp
similarity index 98%
rename from Framework/CurveFitting/src/ProcessBackground.cpp
rename to Framework/CurveFitting/src/Functions/ProcessBackground.cpp
index d6bd7e43f1a3cf57dab73270076e1b83b6994019..3df0c026c17f7f09df892405a48b89137f95b329 100644
--- a/Framework/CurveFitting/src/ProcessBackground.cpp
+++ b/Framework/CurveFitting/src/Functions/ProcessBackground.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ProcessBackground.h"
+#include "MantidCurveFitting/Functions/ProcessBackground.h"
 #include "MantidAPI/WorkspaceProperty.h"
 #include "MantidKernel/Property.h"
 #include "MantidKernel/ListValidator.h"
@@ -6,8 +6,8 @@
 #include "MantidKernel/VisibleWhenProperty.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidAPI/MatrixWorkspace.h"
-#include "MantidCurveFitting/Polynomial.h"
-#include "MantidCurveFitting/Chebyshev.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
+#include "MantidCurveFitting/Functions/Chebyshev.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidGeometry/Crystal/IPeak.h"
 #include "MantidAPI/TableRow.h"
@@ -17,15 +17,22 @@
 #include <boost/algorithm/string/split.hpp>
 
 using namespace Mantid;
+
 using namespace Mantid::API;
+
 using namespace Mantid::Kernel;
+
 using namespace Mantid::DataObjects;
+
 using namespace Mantid::CurveFitting;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_ALGORITHM(ProcessBackground)
 
@@ -677,17 +684,16 @@ ProcessBackground::autoBackgroundSelection(Workspace2D_sptr bkgdWS) {
   */
 BackgroundFunction_sptr
 ProcessBackground::createBackgroundFunction(const string backgroundtype) {
-  CurveFitting::BackgroundFunction_sptr bkgdfunction;
+  Functions::BackgroundFunction_sptr bkgdfunction;
 
   if (backgroundtype.compare("Polynomial") == 0) {
-    bkgdfunction =
-        boost::dynamic_pointer_cast<CurveFitting::BackgroundFunction>(
-            boost::make_shared<CurveFitting::Polynomial>());
+    bkgdfunction = boost::dynamic_pointer_cast<Functions::BackgroundFunction>(
+        boost::make_shared<Functions::Polynomial>());
     bkgdfunction->initialize();
   } else if (backgroundtype.compare("Chebyshev") == 0) {
-    Chebyshev_sptr cheby = boost::make_shared<CurveFitting::Chebyshev>();
+    Chebyshev_sptr cheby = boost::make_shared<Functions::Chebyshev>();
     bkgdfunction =
-        boost::dynamic_pointer_cast<CurveFitting::BackgroundFunction>(cheby);
+        boost::dynamic_pointer_cast<Functions::BackgroundFunction>(cheby);
     bkgdfunction->initialize();
 
     g_log.debug() << "[D] Chebyshev is set to range " << m_lowerBound << ", "
@@ -1099,5 +1105,6 @@ size_t RemovePeaks::excludePeaks(vector<double> v_inX, vector<bool> &v_useX,
   return count;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ProductFunction.cpp b/Framework/CurveFitting/src/Functions/ProductFunction.cpp
similarity index 89%
rename from Framework/CurveFitting/src/ProductFunction.cpp
rename to Framework/CurveFitting/src/Functions/ProductFunction.cpp
index 91152ccf885dd482e7f781cf3cbcec49e4986bcc..777e29e20fc2a09b9f1d455a5bb99d526e919aea 100644
--- a/Framework/CurveFitting/src/ProductFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/ProductFunction.cpp
@@ -1,11 +1,14 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/ProductFunction.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ProductFunction)
 
@@ -34,5 +37,6 @@ void ProductFunction::functionDeriv(const API::FunctionDomain &domain,
   calNumericalDeriv(domain, jacobian);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ProductLinearExp.cpp b/Framework/CurveFitting/src/Functions/ProductLinearExp.cpp
similarity index 87%
rename from Framework/CurveFitting/src/ProductLinearExp.cpp
rename to Framework/CurveFitting/src/Functions/ProductLinearExp.cpp
index 58079f6a9cdb9d39ad19d0ba3fd67d8c58684e75..c4d3758b8240479f579389db207affbd0c0f8e6b 100644
--- a/Framework/CurveFitting/src/ProductLinearExp.cpp
+++ b/Framework/CurveFitting/src/Functions/ProductLinearExp.cpp
@@ -1,13 +1,17 @@
-#include "MantidCurveFitting/ProductLinearExp.h"
-#include "MantidCurveFitting/ExpDecay.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/ProductFunction.h"
+#include "MantidCurveFitting/Functions/ProductLinearExp.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(ProductLinearExp)
@@ -72,5 +76,6 @@ void ProductLinearExp::function1D(double *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ProductQuadraticExp.cpp b/Framework/CurveFitting/src/Functions/ProductQuadraticExp.cpp
similarity index 88%
rename from Framework/CurveFitting/src/ProductQuadraticExp.cpp
rename to Framework/CurveFitting/src/Functions/ProductQuadraticExp.cpp
index 0d6dc24cd0997d06bbf9c44605ec95e1da170f69..5bd2458173bcdc84d300630334c6142f09eb4f04 100644
--- a/Framework/CurveFitting/src/ProductQuadraticExp.cpp
+++ b/Framework/CurveFitting/src/Functions/ProductQuadraticExp.cpp
@@ -1,11 +1,14 @@
-#include "MantidCurveFitting/ProductQuadraticExp.h"
-#include "MantidCurveFitting/ExpDecay.h"
-#include "MantidCurveFitting/Quadratic.h"
-#include "MantidCurveFitting/ProductFunction.h"
+#include "MantidCurveFitting/Functions/ProductQuadraticExp.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/Functions/Quadratic.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ProductQuadraticExp)
 
@@ -73,5 +76,6 @@ void ProductQuadraticExp::function1D(double *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/PseudoVoigt.cpp b/Framework/CurveFitting/src/Functions/PseudoVoigt.cpp
similarity index 92%
rename from Framework/CurveFitting/src/PseudoVoigt.cpp
rename to Framework/CurveFitting/src/Functions/PseudoVoigt.cpp
index a492df6add6514a4888fc8eb88b80719fd5c99dd..a0ce2def8134e7420663297cd75c8fb529bc7b94 100644
--- a/Framework/CurveFitting/src/PseudoVoigt.cpp
+++ b/Framework/CurveFitting/src/Functions/PseudoVoigt.cpp
@@ -1,11 +1,15 @@
-#include "MantidCurveFitting/PseudoVoigt.h"
+#include "MantidCurveFitting/Functions/PseudoVoigt.h"
 #include "MantidAPI/FunctionFactory.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+using namespace Constraints;
 
 using namespace API;
 
@@ -83,5 +87,6 @@ void PseudoVoigt::init() {
   addConstraint(mixingConstraint);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Quadratic.cpp b/Framework/CurveFitting/src/Functions/Quadratic.cpp
similarity index 92%
rename from Framework/CurveFitting/src/Quadratic.cpp
rename to Framework/CurveFitting/src/Functions/Quadratic.cpp
index 0b364ce4a2319cdc0d2b4ef5feb11aad2f1e9963..cb6a2b6f6613a13494efed79a674bedcd94fe056 100644
--- a/Framework/CurveFitting/src/Quadratic.cpp
+++ b/Framework/CurveFitting/src/Functions/Quadratic.cpp
@@ -1,13 +1,17 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Quadratic.h"
+#include "MantidCurveFitting/Functions/Quadratic.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Quadratic)
@@ -53,5 +57,6 @@ void Quadratic::functionDeriv1D(API::Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ReflectivityMulf.cpp b/Framework/CurveFitting/src/Functions/ReflectivityMulf.cpp
similarity index 98%
rename from Framework/CurveFitting/src/ReflectivityMulf.cpp
rename to Framework/CurveFitting/src/Functions/ReflectivityMulf.cpp
index 17ab832f7de39c76e1e7bc4e17654844dbce9667..4d84564dd5a0ab38d2ccec35b20b363cbc60dcda 100644
--- a/Framework/CurveFitting/src/ReflectivityMulf.cpp
+++ b/Framework/CurveFitting/src/Functions/ReflectivityMulf.cpp
@@ -1,15 +1,19 @@
-#include "MantidCurveFitting/ReflectivityMulf.h"
+#include "MantidCurveFitting/Functions/ReflectivityMulf.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <boost/lexical_cast.hpp>
 #include <cmath>
 
 using namespace Mantid::Kernel;
+
 using namespace Mantid::API;
 
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ReflectivityMulf)
 
@@ -292,5 +296,6 @@ void ReflectivityMulf::setAttribute(const std::string &attName,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Resolution.cpp b/Framework/CurveFitting/src/Functions/Resolution.cpp
similarity index 90%
rename from Framework/CurveFitting/src/Resolution.cpp
rename to Framework/CurveFitting/src/Functions/Resolution.cpp
index 75319dbcb07e8d3e5c43e859a30e364208b6798e..fad3353dbfd1de98e2d4d5f84bfd156a5ab1a35f 100644
--- a/Framework/CurveFitting/src/Resolution.cpp
+++ b/Framework/CurveFitting/src/Functions/Resolution.cpp
@@ -1,13 +1,17 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/Resolution.h"
+#include "MantidCurveFitting/Functions/Resolution.h"
 #include "MantidAPI/FunctionFactory.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(Resolution)
@@ -43,5 +47,6 @@ bool Resolution::hasAttribute(const std::string &attName) const {
   return m_fun.hasAttribute(attName);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/SimpleChebfun.cpp b/Framework/CurveFitting/src/Functions/SimpleChebfun.cpp
similarity index 97%
rename from Framework/CurveFitting/src/SimpleChebfun.cpp
rename to Framework/CurveFitting/src/Functions/SimpleChebfun.cpp
index 9416aaaae314a59def2b0c4b00c2ae95d413ad59..1cc4ce08e3f2f9ed010d08128465edda590161cc 100644
--- a/Framework/CurveFitting/src/SimpleChebfun.cpp
+++ b/Framework/CurveFitting/src/Functions/SimpleChebfun.cpp
@@ -1,10 +1,13 @@
-#include "MantidCurveFitting/SimpleChebfun.h"
+#include "MantidCurveFitting/Functions/SimpleChebfun.h"
 #include "MantidAPI/IFunction.h"
 
 #include <boost/make_shared.hpp>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 //----------------------------------------------------------------------------------------------
 /// Constructs a SimpleChebfun that approximates a function with a polynomial of
@@ -163,5 +166,6 @@ SimpleChebfun &SimpleChebfun::operator+=(ChebfunFunctionType fun) {
   return *this;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/StaticKuboToyabe.cpp b/Framework/CurveFitting/src/Functions/StaticKuboToyabe.cpp
similarity index 87%
rename from Framework/CurveFitting/src/StaticKuboToyabe.cpp
rename to Framework/CurveFitting/src/Functions/StaticKuboToyabe.cpp
index 6d96804846ab9f92aa37aa5a8261ced40e400b91..9875e375005a0643d38d89ebbdf44a2fc5a286dc 100644
--- a/Framework/CurveFitting/src/StaticKuboToyabe.cpp
+++ b/Framework/CurveFitting/src/Functions/StaticKuboToyabe.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/StaticKuboToyabe.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabe.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(StaticKuboToyabe)
@@ -30,5 +34,6 @@ void StaticKuboToyabe::function1D(double *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/StaticKuboToyabeTimesExpDecay.cpp b/Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesExpDecay.cpp
similarity index 87%
rename from Framework/CurveFitting/src/StaticKuboToyabeTimesExpDecay.cpp
rename to Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesExpDecay.cpp
index 8ee826d6dbc1de68b6903e508f3db0124516c15b..33e328757063e52ecbc75829779ec16f6e1dd310 100644
--- a/Framework/CurveFitting/src/StaticKuboToyabeTimesExpDecay.cpp
+++ b/Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesExpDecay.cpp
@@ -1,11 +1,15 @@
-#include "MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(StaticKuboToyabeTimesExpDecay)
@@ -34,5 +38,6 @@ void StaticKuboToyabeTimesExpDecay::function1D(double *out,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/StaticKuboToyabeTimesGausDecay.cpp b/Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesGausDecay.cpp
similarity index 88%
rename from Framework/CurveFitting/src/StaticKuboToyabeTimesGausDecay.cpp
rename to Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesGausDecay.cpp
index 50a84ee40c92b50a38917037d2c481a1a111b102..3fd2c5394f95286b21697564df093db0039f9d92 100644
--- a/Framework/CurveFitting/src/StaticKuboToyabeTimesGausDecay.cpp
+++ b/Framework/CurveFitting/src/Functions/StaticKuboToyabeTimesGausDecay.cpp
@@ -1,10 +1,15 @@
-#include "MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(StaticKuboToyabeTimesGausDecay)
@@ -36,5 +41,6 @@ void StaticKuboToyabeTimesGausDecay::function1D(double *out,
         A * (exp(-(x2 * D2) / 2) * (1 - x2 * D2) * C1 + C2) * exp(-S2 * x2);
   }
 }
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/StretchExp.cpp b/Framework/CurveFitting/src/Functions/StretchExp.cpp
similarity index 94%
rename from Framework/CurveFitting/src/StretchExp.cpp
rename to Framework/CurveFitting/src/Functions/StretchExp.cpp
index 51064e2b85c9a6d5b9071afb15bdcb9a8fce9822..41a8cf8b7ff734787fbe4260de9cf4400ed4d1e5 100644
--- a/Framework/CurveFitting/src/StretchExp.cpp
+++ b/Framework/CurveFitting/src/Functions/StretchExp.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/StretchExp.h"
+#include "MantidCurveFitting/Functions/StretchExp.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(StretchExp)
@@ -71,5 +75,6 @@ void StretchExp::functionDeriv1D(API::Jacobian *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/StretchExpMuon.cpp b/Framework/CurveFitting/src/Functions/StretchExpMuon.cpp
similarity index 88%
rename from Framework/CurveFitting/src/StretchExpMuon.cpp
rename to Framework/CurveFitting/src/Functions/StretchExpMuon.cpp
index 3c14c8fead5e209b6a6de41a690dfa819079e125..c88d045de580b32c08f6eb0341d26784da9fdf76 100644
--- a/Framework/CurveFitting/src/StretchExpMuon.cpp
+++ b/Framework/CurveFitting/src/Functions/StretchExpMuon.cpp
@@ -1,14 +1,18 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/StretchExpMuon.h"
+#include "MantidCurveFitting/Functions/StretchExpMuon.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <cmath>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 using namespace Kernel;
+
 using namespace API;
 
 DECLARE_FUNCTION(StretchExpMuon)
@@ -31,5 +35,6 @@ void StretchExpMuon::function1D(double *out, const double *xValues,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/TabulatedFunction.cpp b/Framework/CurveFitting/src/Functions/TabulatedFunction.cpp
similarity index 98%
rename from Framework/CurveFitting/src/TabulatedFunction.cpp
rename to Framework/CurveFitting/src/Functions/TabulatedFunction.cpp
index 10f9e8168a8779989e05a736b8c56b3b8108c6e1..d0efc13940ae2ce8c316fbd2d6445b2839293b20 100644
--- a/Framework/CurveFitting/src/TabulatedFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/TabulatedFunction.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/TabulatedFunction.h"
+#include "MantidCurveFitting/Functions/TabulatedFunction.h"
 #include "MantidKernel/FileValidator.h"
 #include "MantidAPI/Algorithm.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -14,7 +14,12 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
+
 using namespace Kernel;
+
 using namespace API;
 
 namespace {
@@ -276,5 +281,6 @@ void TabulatedFunction::setupData() const {
   m_setupFinished = true;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpAlpha.cpp b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpAlpha.cpp
similarity index 94%
rename from Framework/CurveFitting/src/ThermalNeutronBk2BkExpAlpha.cpp
rename to Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpAlpha.cpp
index 9eff40af37195f5aa5a285dbcbedf0709fbc9d90..464c73e7fb34fa7da4c8d0724e10434e2a6cb249 100644
--- a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpAlpha.cpp
+++ b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpAlpha.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
 
@@ -6,12 +6,18 @@
 #include <cmath>
 
 using namespace std;
+
 using namespace Mantid;
+
 using namespace Mantid::API;
+
 using namespace Mantid::CurveFitting;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ThermalNeutronBk2BkExpAlpha)
 
@@ -80,5 +86,6 @@ double ThermalNeutronBk2BkExpAlpha::corefunction(double dh, double width,
   return alpha;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpBeta.cpp b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpBeta.cpp
similarity index 94%
rename from Framework/CurveFitting/src/ThermalNeutronBk2BkExpBeta.cpp
rename to Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpBeta.cpp
index ae1170803594d1666b7d81497f488802e5e5c85f..92901743be4ceca7e440dbd811db471ffd153962 100644
--- a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpBeta.cpp
+++ b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpBeta.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
 
@@ -6,12 +6,18 @@
 #include <cmath>
 
 using namespace std;
+
 using namespace Mantid;
+
 using namespace Mantid::CurveFitting;
+
 using namespace Mantid::API;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ThermalNeutronBk2BkExpBeta)
 
@@ -79,5 +85,6 @@ double ThermalNeutronBk2BkExpBeta::corefunction(double dh, double width,
   return beta;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpConvPVoigt.cpp b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpConvPVoigt.cpp
similarity index 99%
rename from Framework/CurveFitting/src/ThermalNeutronBk2BkExpConvPVoigt.cpp
rename to Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpConvPVoigt.cpp
index 521becfcc478059efe73a2c0aca2a8c645108d6c..8ee59b58177ad3525a2615c6ef4ec8fcd8b8703a 100644
--- a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpConvPVoigt.cpp
+++ b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpConvPVoigt.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/ParamFunction.h"
 #include "MantidKernel/EmptyValues.h"
@@ -14,11 +14,16 @@ const double PEAKRANGE = 5.0;
 const double NEG_DBL_MAX = -1. * DBL_MAX;
 
 using namespace std;
+
 using namespace Mantid;
+
 using namespace Mantid::API;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 namespace {
 /// static reference to the logger
 Kernel::Logger g_log("ThermalNeutronBk2BkExpConvPV");
@@ -774,5 +779,6 @@ void ThermalNeutronBk2BkExpConvPVoigt::setPeakRadius(const int& r)
 }
   */
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpSigma.cpp b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpSigma.cpp
similarity index 94%
rename from Framework/CurveFitting/src/ThermalNeutronBk2BkExpSigma.cpp
rename to Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpSigma.cpp
index ed8f0af7b195223ea9093587e5bdbf6a29fbca31..51c0370b5cffa8752f75d08b2e7ac51f259e3f71 100644
--- a/Framework/CurveFitting/src/ThermalNeutronBk2BkExpSigma.cpp
+++ b/Framework/CurveFitting/src/Functions/ThermalNeutronBk2BkExpSigma.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
 
@@ -6,12 +6,18 @@
 #include <cmath>
 
 using namespace std;
+
 using namespace Mantid;
+
 using namespace Mantid::API;
+
 using namespace Mantid::CurveFitting;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 DECLARE_FUNCTION(ThermalNeutronBk2BkExpSigma)
 
@@ -77,5 +83,6 @@ double ThermalNeutronBk2BkExpSigma::corefunction(double dh, double sig0sq,
   return sigma;
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/ThermalNeutronDtoTOFFunction.cpp b/Framework/CurveFitting/src/Functions/ThermalNeutronDtoTOFFunction.cpp
similarity index 96%
rename from Framework/CurveFitting/src/ThermalNeutronDtoTOFFunction.cpp
rename to Framework/CurveFitting/src/Functions/ThermalNeutronDtoTOFFunction.cpp
index 8566384197fe62b9422f94a5b9fd39defa2090fc..4d3bb672a2df48ce85ad78f6c9e1cdaa5100d454 100644
--- a/Framework/CurveFitting/src/ThermalNeutronDtoTOFFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/ThermalNeutronDtoTOFFunction.cpp
@@ -1,4 +1,4 @@
-#include "MantidCurveFitting/ThermalNeutronDtoTOFFunction.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h"
 #include "MantidKernel/System.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/FunctionDomain1D.h"
@@ -6,10 +6,14 @@
 #include <cmath>
 
 using namespace Mantid::API;
+
 using namespace std;
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 //----------------------------------------------------------------------------------------------
 DECLARE_FUNCTION(ThermalNeutronDtoTOFFunction)
@@ -140,5 +144,6 @@ void ThermalNeutronDtoTOFFunction::functionDerivLocal(API::Jacobian *,
       "ThermalNeutronDtoTOFFunction.");
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/UserFunction.cpp b/Framework/CurveFitting/src/Functions/UserFunction.cpp
similarity index 95%
rename from Framework/CurveFitting/src/UserFunction.cpp
rename to Framework/CurveFitting/src/Functions/UserFunction.cpp
index b367c452958f8775f7e667120a214977ed01357e..45ec9fc62f46b77425f2af1f312576146f0c507d 100644
--- a/Framework/CurveFitting/src/UserFunction.cpp
+++ b/Framework/CurveFitting/src/Functions/UserFunction.cpp
@@ -1,18 +1,22 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <boost/tokenizer.hpp>
 #include "MantidGeometry/muParser_Silent.h"
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 // Register the class into the function factory
 DECLARE_FUNCTION(UserFunction)
 
 using namespace Kernel;
+
 using namespace API;
 
 /// Constructor
@@ -113,5 +117,6 @@ void UserFunction::functionDeriv(const API::FunctionDomain &domain,
   calNumericalDeriv(domain, jacobian);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/UserFunction1D.cpp b/Framework/CurveFitting/src/Functions/UserFunction1D.cpp
similarity index 97%
rename from Framework/CurveFitting/src/UserFunction1D.cpp
rename to Framework/CurveFitting/src/Functions/UserFunction1D.cpp
index 5164c2322bb93304a9703a2856c7d883296f1697..0c0ee89a9d0c1c6e2befac956b6146109db7825b 100644
--- a/Framework/CurveFitting/src/UserFunction1D.cpp
+++ b/Framework/CurveFitting/src/Functions/UserFunction1D.cpp
@@ -1,18 +1,22 @@
 //----------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------
-#include "MantidCurveFitting/UserFunction1D.h"
+#include "MantidCurveFitting/Functions/UserFunction1D.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidKernel/MandatoryValidator.h"
 #include <boost/tokenizer.hpp>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 
 // Register the class into the algorithm factory
 DECLARE_ALGORITHM(UserFunction1D)
 
 using namespace Kernel;
+
 using namespace API;
 
 /** Static callback function used by MuParser to initialize variables implicitly
@@ -155,5 +159,6 @@ void UserFunction1D::functionDeriv(const double *in, Jacobian *out,
   }
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/VesuvioResolution.cpp b/Framework/CurveFitting/src/Functions/VesuvioResolution.cpp
similarity index 96%
rename from Framework/CurveFitting/src/VesuvioResolution.cpp
rename to Framework/CurveFitting/src/Functions/VesuvioResolution.cpp
index d850ed0f223861674134ac23aa1fa84bb5a6bd82..44c6b1e458ef1142f49b68f0f61080fca750fe4e 100644
--- a/Framework/CurveFitting/src/VesuvioResolution.cpp
+++ b/Framework/CurveFitting/src/Functions/VesuvioResolution.cpp
@@ -1,13 +1,18 @@
 //-----------------------------------------------------------------------------
 // Includes
 //-----------------------------------------------------------------------------
-#include "MantidCurveFitting/VesuvioResolution.h"
-#include "MantidCurveFitting/ConvertToYSpace.h"
+#include "MantidCurveFitting/Functions/VesuvioResolution.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <gsl/gsl_poly.h>
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace Mantid;
+using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 namespace {
 ///@cond
 const char *MASS_NAME = "Mass";
@@ -78,6 +83,7 @@ std::string VesuvioResolution::name() const { return "VesuvioResolution"; }
  */
 void VesuvioResolution::setUpForFit() {
   // Voigt
+
   using namespace Mantid::API;
   m_voigt = boost::dynamic_pointer_cast<IPeakFunction>(
       FunctionFactory::Instance().createFunction("Voigt"));
@@ -108,7 +114,7 @@ void VesuvioResolution::setMatrixWorkspace(
  * @param respar Structure containing resolution parameters
  */
 void VesuvioResolution::cacheResolutionComponents(
-    const DetectorParams &detpar, const ResolutionParams &respar) {
+    const Algorithms::DetectorParams &detpar, const ResolutionParams &respar) {
   // geometry
   double theta = detpar.theta; // cache for frequent access
   double hwhmLorentzE = respar.dEnLorentz;
@@ -253,5 +259,6 @@ void VesuvioResolution::voigtApprox(std::vector<double> &voigt,
                  std::bind2nd(std::multiplies<double>(), norm));
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/Voigt.cpp b/Framework/CurveFitting/src/Functions/Voigt.cpp
similarity index 97%
rename from Framework/CurveFitting/src/Voigt.cpp
rename to Framework/CurveFitting/src/Functions/Voigt.cpp
index 9e006da4d314d97a44efe6c8f7f5bcc3b4b0a90a..73ce3f49f9979c516ecceedd0af016ee7b69eaf5 100644
--- a/Framework/CurveFitting/src/Voigt.cpp
+++ b/Framework/CurveFitting/src/Functions/Voigt.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------------------------
 // Includes
 //----------------------------------------------------------------------------------------------
-#include "MantidCurveFitting/Voigt.h"
+#include "MantidCurveFitting/Functions/Voigt.h"
 
 #include "MantidAPI/FunctionFactory.h"
 
@@ -9,6 +9,9 @@
 
 namespace Mantid {
 namespace CurveFitting {
+namespace Functions {
+
+using namespace CurveFitting;
 DECLARE_FUNCTION(Voigt)
 
 namespace {
@@ -165,5 +168,6 @@ void Voigt::setFwhm(const double value) {
   this->setParameter(GAUSSIAN_FWHM, 0.5 * value);
 }
 
+} // namespace Functions
 } // namespace CurveFitting
 } // namespace Mantid
diff --git a/Framework/CurveFitting/src/GSLFunctions.cpp b/Framework/CurveFitting/src/GSLFunctions.cpp
index d5c4445dcc00a0821742647014922c1ea3c7c16d..2ebd26b9ec65f05f028b43dc61b5a802e7a51600 100644
--- a/Framework/CurveFitting/src/GSLFunctions.cpp
+++ b/Framework/CurveFitting/src/GSLFunctions.cpp
@@ -126,7 +126,7 @@ int gsl_df(const gsl_vector *x, void *params, gsl_matrix *J) {
 
   // functionDeriv() return derivatives of calculated data values. Need to
   // convert this values into
-  // derivatives of calculated-observed devided by error values used by GSL
+  // derivatives of calculated-observed divided by error values used by GSL
   auto values = boost::dynamic_pointer_cast<API::FunctionValues>(
       p->costFunction->getValues());
   if (!values) {
@@ -159,7 +159,8 @@ int gsl_fdf(const gsl_vector *x, void *params, gsl_vector *f, gsl_matrix *J) {
  * Constructor. Creates declared -> active index map
  * @param cf :: ICostFunction
  */
-GSL_FitData::GSL_FitData(boost::shared_ptr<CostFuncLeastSquares> cf)
+GSL_FitData::GSL_FitData(
+    boost::shared_ptr<CostFunctions::CostFuncLeastSquares> cf)
     : function(cf->getFittingFunction()), costFunction(cf) {
   gsl_set_error_handler_off();
   // number of active parameters
diff --git a/Framework/CurveFitting/src/LatticeDomainCreator.cpp b/Framework/CurveFitting/src/LatticeDomainCreator.cpp
index 69901d090985206b121217ff3a25cc940bff389d..db2ebe4bde9fca3df9b46c7a12805e94876df8e1 100644
--- a/Framework/CurveFitting/src/LatticeDomainCreator.cpp
+++ b/Framework/CurveFitting/src/LatticeDomainCreator.cpp
@@ -9,7 +9,7 @@
 #include "MantidAPI/WorkspaceFactory.h"
 
 #include "MantidDataObjects/Peak.h"
-#include "MantidCurveFitting/PawleyFit.h"
+#include "MantidCurveFitting/Algorithms/PawleyFit.h"
 
 namespace Mantid {
 namespace CurveFitting {
@@ -17,6 +17,7 @@ namespace CurveFitting {
 using namespace API;
 using namespace Kernel;
 using namespace DataObjects;
+using namespace CurveFitting::Algorithms;
 
 /// Constructor
 LatticeDomainCreator::LatticeDomainCreator(
diff --git a/Framework/CurveFitting/src/LatticeFunction.cpp b/Framework/CurveFitting/src/LatticeFunction.cpp
index 895327b1d97f18dcb4252531b56b780828c0a84b..0fd29c73d2762d3ef7ee2772847997eee024d4b3 100644
--- a/Framework/CurveFitting/src/LatticeFunction.cpp
+++ b/Framework/CurveFitting/src/LatticeFunction.cpp
@@ -62,8 +62,8 @@ void LatticeFunction::init() {
 
 /// Checks that the decorated function is a PawleyParameterFunction.
 void LatticeFunction::beforeDecoratedFunctionSet(const IFunction_sptr &fn) {
-  PawleyParameterFunction_sptr paramFn =
-      boost::dynamic_pointer_cast<PawleyParameterFunction>(fn);
+  Functions::PawleyParameterFunction_sptr paramFn =
+      boost::dynamic_pointer_cast<Functions::PawleyParameterFunction>(fn);
 
   if (!paramFn) {
     throw std::invalid_argument(
diff --git a/Framework/CurveFitting/src/MultiBG.cpp b/Framework/CurveFitting/src/MultiBG.cpp
deleted file mode 100644
index d0cc9705068359f16f2b8232816514899a2ea14c..0000000000000000000000000000000000000000
--- a/Framework/CurveFitting/src/MultiBG.cpp
+++ /dev/null
@@ -1,306 +0,0 @@
-//----------------------------------------------------------------------
-// Includes
-//----------------------------------------------------------------------
-#include "MantidCurveFitting/MultiBG.h"
-#include "MantidAPI/IFunctionMW.h"
-#include "MantidAPI/Expression.h"
-#include "MantidAPI/AnalysisDataService.h"
-#include "MantidAPI/WorkspaceGroup.h"
-#include "MantidAPI/FunctionFactory.h"
-
-#include <boost/lambda/lambda.hpp>
-#include <boost/lexical_cast.hpp>
-
-#include <sstream>
-#include <algorithm>
-#include <iterator>
-#include <float.h>
-
-using namespace boost::lambda;
-
-namespace Mantid {
-namespace CurveFitting {
-
-DECLARE_FUNCTION(MultiBG)
-
-/** A Jacobian for individual functions
- */
-class PartialJacobian : public API::Jacobian {
-  API::Jacobian *m_J; ///< pointer to the overall Jacobian
-  size_t m_iY0; ///< data array offset in the overall Jacobian for a particular
-  /// function
-  size_t m_iP0; ///< parameter offset in the overall Jacobian for a particular
-  /// function
-  size_t m_iaP0; ///< offset in the active Jacobian for a particular function
-public:
-  /** Constructor
-   * @param J :: A pointer to the overall Jacobian
-   * @param iY0 :: Data array offset index (declared) for a particular function
-   * @param iP0 :: The parameter index (declared) offset for a particular
-   * function
-   * @param iap0 :: The active parameter index (declared) offset for a
-   * particular function
-   */
-  PartialJacobian(API::Jacobian *J, size_t iY0, size_t iP0, size_t iap0)
-      : m_J(J), m_iY0(iY0), m_iP0(iP0), m_iaP0(iap0) {}
-  /**
-   * Overridden Jacobian::set(...).
-   * @param iY :: The index of the data point
-   * @param iP :: The parameter index of an individual function.
-   * @param value :: The derivative value
-   */
-  void set(size_t iY, size_t iP, double value) {
-    m_J->set(m_iY0 + iY, m_iP0 + iP, value);
-  }
-  /**
-   * Overridden Jacobian::get(...).
-   * @param iY :: The index of the data point
-   * @param iP :: The parameter index of an individual function.
-   */
-  double get(size_t iY, size_t iP) { return m_J->get(m_iY0 + iY, m_iP0 + iP); }
-  /**  Add number to all iY (data) Jacobian elements for a given iP (parameter)
-   *   @param value :: Value to add
-   *   @param iActiveP :: The index of an active parameter.
-   */
-  virtual void addNumberToColumn(const double &value, const size_t &iActiveP) {
-    m_J->addNumberToColumn(value, m_iaP0 + iActiveP);
-  }
-};
-
-/// Destructor
-MultiBG::~MultiBG() {}
-
-/**
- * Function you want to fit to.
- */
-void MultiBG::function(double *out) const {
-  std::vector<double> tmpOut(dataSize());
-  std::fill_n(out, dataSize(), 0);
-  for (size_t i = 0; i < nFunctions(); i++) {
-    IFitFunction *fun = dynamic_cast<IFitFunction *>(getFunction(i));
-    if (!fun) {
-      throw std::runtime_error(
-          "IFitFunction expected but function of another type found");
-    }
-    size_t nWS = m_funIndex[i].size();
-    for (size_t k = 0; k < nWS; ++k) {
-      size_t j = m_funIndex[i][k];
-      fun->setWorkspace(m_spectra[k].first,
-                        "WorkspaceIndex=" + boost::lexical_cast<std::string>(
-                                                m_spectra[j].second),
-                        false);
-      // std::cerr << i << ' ' << k << " Function " << fun->name() << " ws " <<
-      // fun->getWorkspace()->getName() << " wi "
-      //  << dynamic_cast<Mantid::API::IFunctionMW*>(fun)->getWorkspaceIndex()
-      //  << std::endl;
-      double *out1 = out + m_offset[j];
-      double *tmp1 = &tmpOut[0] + m_offset[j];
-      size_t nData = 0;
-      if (j < m_offset.size() - 1)
-        nData = m_offset[j + 1] - m_offset[j];
-      else
-        nData = dataSize() - m_offset[j];
-      if (i == 0) {
-        fun->function(out1);
-      } else {
-        fun->function(tmp1);
-        std::transform(out1, out1 + nData, tmp1, out1, std::plus<double>());
-      }
-    }
-  }
-  // std::cerr << "Function:\n";
-  // for(size_t i = 0; i<nParams();++i)
-  //{
-  //  std::cerr << getParameter(i) << ' ' ;
-  //}
-  // std::cerr << std::endl;
-  // std::for_each(out,out+m_dataSize,std::cerr << _1 << '\n');
-  // std::cerr << std::endl;
-}
-
-void MultiBG::functionDeriv(API::Jacobian *out) {
-  // it is possible that out is NULL
-  if (!out)
-    return;
-  for (size_t i = 0; i < nFunctions(); i++) {
-    IFitFunction *fun = dynamic_cast<IFitFunction *>(getFunction(i));
-    if (!fun) {
-      throw std::runtime_error(
-          "IFitFunction expected but function of another type found");
-    }
-    size_t nWS = m_funIndex[i].size();
-    for (size_t k = 0; k < nWS; ++k) {
-      size_t j = m_funIndex[i][k];
-      fun->setWorkspace(m_spectra[k].first,
-                        "WorkspaceIndex=" + boost::lexical_cast<std::string>(
-                                                m_spectra[j].second),
-                        false);
-      PartialJacobian J(out, m_offset[j], paramOffset(i), activeOffset(i));
-      fun->functionDeriv(&J);
-    }
-  }
-}
-
-void MultiBG::setWorkspace(boost::shared_ptr<const API::Workspace> ws, bool) {
-  boost::shared_ptr<const API::MatrixWorkspace> mws =
-      boost::dynamic_pointer_cast<const API::MatrixWorkspace>(ws);
-  if (ws && !mws) {
-    throw std::invalid_argument(
-        "Workspace in MultiBG has a wrong type (not a MatrixWorkspace)");
-  }
-  m_workspace = mws;
-}
-/**
- * Sets workspaces to member functions. Constructs the data set for fitting.
- * @param slicing :: A map between member functions and workspaces or empty
- * string. Format:
- *   "f0,Workspace0,i0;f1,Workspace1,i1;f2,Workspace2,i2;..."
- */
-void MultiBG::setSlicing(const std::string &slicing) {
-  boost::shared_ptr<const API::MatrixWorkspace> mws = m_workspace;
-
-  m_funIndex.resize(nFunctions());
-
-  if (!slicing.empty()) {
-    Mantid::API::Expression expr;
-    expr.parse(slicing);
-    // expr can be treated as a list even if it has only 1 term
-    expr.toList(";");
-    for (size_t i = 0; i < expr.size(); ++i) {
-      const Mantid::API::Expression &e = expr[i];
-      if (e.name() != "," || e.size() != 3) {
-        // slicing has a wrong format - ignore it
-        break;
-      }
-      try {
-        std::string wsName = e[1].name();
-        Mantid::API::MatrixWorkspace_sptr ws =
-            boost::dynamic_pointer_cast<Mantid::API::MatrixWorkspace>(
-                Mantid::API::AnalysisDataService::Instance().retrieve(wsName));
-
-        size_t iFun = boost::lexical_cast<size_t>(e[0].name().substr(1));
-        size_t wi = boost::lexical_cast<size_t>(e[2].name());
-        if (iFun >= nFunctions()) {
-          throw std::invalid_argument("MultiBG::setWorkspace: function " +
-                                      e[0].name() + " not found");
-        }
-        std::pair<boost::shared_ptr<const API::MatrixWorkspace>, size_t>
-            spectrum = std::make_pair(ws, wi);
-        m_funIndex[iFun].push_back(m_spectra.size());
-        m_spectra.push_back(spectrum);
-        IFitFunction *fun = dynamic_cast<IFitFunction *>(getFunction(iFun));
-        if (!fun) {
-          throw std::runtime_error(
-              "IFitFunction expected but function of another type found");
-        }
-        fun->setWorkspace(ws, "WorkspaceIndex=" + e[2].name(), false);
-      } catch (...) {
-        break;
-      }
-    }
-  }
-
-  // examine the member functions and fill in the m_funIndex array
-  for (size_t iFun = 0; iFun < nFunctions(); iFun++) {
-    API::IFunctionMW *fun = dynamic_cast<API::IFunctionMW *>(getFunction(iFun));
-    if (!fun) {
-      throw std::runtime_error("MultiBG works with IFunctionMW only");
-    }
-    if (fun->getWorkspace()) {
-      boost::shared_ptr<const API::MatrixWorkspace> iws =
-          fun->getMatrixWorkspace();
-      std::pair<boost::shared_ptr<const API::MatrixWorkspace>, size_t>
-          spectrum = std::make_pair(iws, fun->getWorkspaceIndex());
-      std::vector<std::pair<boost::shared_ptr<const API::MatrixWorkspace>,
-                            size_t>>::iterator it =
-          std::find(m_spectra.begin(), m_spectra.end(), spectrum);
-      size_t i;
-      if (it == m_spectra.end()) {
-        i = m_spectra.size();
-        m_spectra.push_back(spectrum);
-      } else {
-        i = size_t(std::distance(it, m_spectra.begin()));
-      }
-      m_funIndex[iFun].push_back(i);
-      // fun->setWorkspace(boost::static_pointer_cast<const
-      // API::Workspace>(iws),slicing,false);
-    }
-  }
-
-  // setWorkspace can be called by GUI when the function had not been properly
-  // initialized
-  if (m_spectra.empty()) {
-    return;
-  }
-
-  // make functions without set workspace fit to all workspaces
-  for (size_t iFun = 0; iFun < nFunctions(); iFun++) {
-    std::vector<size_t> &index = m_funIndex[iFun];
-    if (index.empty()) {
-      index.resize(m_spectra.size());
-      int i = 0;
-      std::for_each(index.begin(), index.end(), _1 = var(i)++);
-      IFitFunction *fun = dynamic_cast<IFitFunction *>(getFunction(iFun));
-      if (!fun) {
-        throw std::runtime_error(
-            "IFitFunction expected but function of another type found");
-      }
-      fun->setWorkspace(m_spectra[0].first,
-                        "WorkspaceIndex=" + boost::lexical_cast<std::string>(
-                                                m_spectra[0].second),
-                        false);
-    }
-  }
-
-  // set dimensions and calculate ws's contribution to m_dataSize
-  // IFunctionMW::setWorkspace(ws,slicing,false);
-  // add other workspaces
-  m_offset.resize(m_spectra.size(), 0);
-  size_t nData = 0;
-  for (size_t i = 0; i < m_spectra.size(); ++i) {
-    mws = m_spectra[i].first;
-    size_t n = mws->blocksize();
-    m_offset[i] = nData;
-    nData += static_cast<int>(n);
-  }
-
-  m_data.resize(nData);
-  m_weights.resize(nData);
-
-  //... fill in the data and the weights ...
-
-  for (size_t i = 0; i < m_spectra.size(); ++i) {
-    mws = m_spectra[i].first;
-    size_t wi = m_spectra[i].second;
-    const Mantid::MantidVec &Y = mws->readY(wi);
-    const Mantid::MantidVec &E = mws->readE(wi);
-    size_t j0 = m_offset[i];
-    for (size_t j = 0; j < Y.size(); ++j) {
-      m_data[j0 + j] = Y[j];
-      double err = E[j];
-      m_weights[j0 + j] = err != 0.0 ? 1. / err : 1.0;
-    }
-  }
-
-  // std::cerr << "Workspace:\n";
-  // std::for_each(&m_data[0],&m_data[0]+m_dataSize,std::cerr << _1 << '\n');
-}
-
-/**
- * Creates a workspace containing values calculated with this function. It takes
- * a workspace and ws index
- * of a spectrum which this function may have been fitted to. The output
- * contains the original spectrum
- * (wi = 0), the calculated values (ws = 1), and the difference between them (ws
- * = 2).
- * @param sd :: optional standard deviations of the parameters for calculating
- * the error bars
- * @return created workspase
- */
-boost::shared_ptr<API::WorkspaceGroup>
-MultiBG::createCalculatedWorkspaceGroup(const std::vector<double> &sd) {
-  UNUSED_ARG(sd)
-  return boost::shared_ptr<API::WorkspaceGroup>();
-}
-} // namespace API
-} // namespace Mantid
diff --git a/Framework/CurveFitting/src/ParDomain.cpp b/Framework/CurveFitting/src/ParDomain.cpp
index 7cd4fdfe9e2f07b684cc16b4edcb6b9df9145177..01a76765f051c38b7e694348961519a5dc7639d4 100644
--- a/Framework/CurveFitting/src/ParDomain.cpp
+++ b/Framework/CurveFitting/src/ParDomain.cpp
@@ -28,7 +28,8 @@ void ParDomain::getDomainAndValues(size_t i, API::FunctionDomain_sptr &domain,
  * Calculate the value of a least squares cost function
  * @param leastSquares :: The least squares cost func to calculate the value for
  */
-void ParDomain::leastSquaresVal(const CostFuncLeastSquares &leastSquares) {
+void ParDomain::leastSquaresVal(
+    const CostFunctions::CostFuncLeastSquares &leastSquares) {
   const int n = static_cast<int>(getNDomains());
   PARALLEL_FOR_NO_WSP_CHECK()
   for (int i = 0; i < n; ++i) {
@@ -54,7 +55,7 @@ void ParDomain::leastSquaresVal(const CostFuncLeastSquares &leastSquares) {
  * @param evalHessian :: Flag to evaluate the Hessian (second derivatives)
  */
 void ParDomain::leastSquaresValDerivHessian(
-    const CostFuncLeastSquares &leastSquares, bool evalDeriv,
+    const CostFunctions::CostFuncLeastSquares &leastSquares, bool evalDeriv,
     bool evalHessian) {
   const int n = static_cast<int>(getNDomains());
   PARALLEL_SET_DYNAMIC(0);
diff --git a/Framework/CurveFitting/src/ParameterEstimator.cpp b/Framework/CurveFitting/src/ParameterEstimator.cpp
index b06ef9bf59e96e5ecb51b54e67e221a14b95be9a..93c46fd68fbb9ae0690fbf296458a5f3bb20b7c4 100644
--- a/Framework/CurveFitting/src/ParameterEstimator.cpp
+++ b/Framework/CurveFitting/src/ParameterEstimator.cpp
@@ -1,5 +1,5 @@
 #include "MantidCurveFitting/ParameterEstimator.h"
-#include "MantidCurveFitting/SimpleChebfun.h"
+#include "MantidCurveFitting/Functions/SimpleChebfun.h"
 
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/FunctionDomain1D.h"
@@ -13,6 +13,8 @@ namespace Mantid {
 namespace CurveFitting {
 namespace ParameterEstimator {
 
+using namespace Functions;
+
 /// The logger.
 Kernel::Logger g_log("ParameterEstimator");
 
diff --git a/Framework/CurveFitting/src/SeqDomain.cpp b/Framework/CurveFitting/src/SeqDomain.cpp
index a36e808948d556a6e366f88551bcdf8fffe2d645..8a704c1745664d0961b48088642ba0fdffc410e6 100644
--- a/Framework/CurveFitting/src/SeqDomain.cpp
+++ b/Framework/CurveFitting/src/SeqDomain.cpp
@@ -68,7 +68,8 @@ SeqDomain *SeqDomain::create(API::IDomainCreator::DomainType type) {
  * Calculate the value of a least squares cost function
  * @param leastSquares :: The least squares cost func to calculate the value for
  */
-void SeqDomain::leastSquaresVal(const CostFuncLeastSquares &leastSquares) {
+void SeqDomain::leastSquaresVal(
+    const CostFunctions::CostFuncLeastSquares &leastSquares) {
   API::FunctionDomain_sptr domain;
   API::FunctionValues_sptr values;
   const size_t n = getNDomains();
@@ -87,7 +88,7 @@ void SeqDomain::leastSquaresVal(const CostFuncLeastSquares &leastSquares) {
  * Calculate the value of a least squares cost function
  * @param rwp :: The RWP cost func to calculate the value for
  */
-void SeqDomain::rwpVal(const CostFuncRwp &rwp) {
+void SeqDomain::rwpVal(const CostFunctions::CostFuncRwp &rwp) {
   API::FunctionDomain_sptr domain;
   API::FunctionValues_sptr values;
   const size_t n = getNDomains();
@@ -109,7 +110,7 @@ void SeqDomain::rwpVal(const CostFuncRwp &rwp) {
  * @param evalHessian :: Flag to evaluate the Hessian (second derivatives)
  */
 void SeqDomain::leastSquaresValDerivHessian(
-    const CostFuncLeastSquares &leastSquares, bool evalDeriv,
+    const CostFunctions::CostFuncLeastSquares &leastSquares, bool evalDeriv,
     bool evalHessian) {
   API::FunctionDomain_sptr domain;
   API::FunctionValues_sptr values;
@@ -131,8 +132,8 @@ void SeqDomain::leastSquaresValDerivHessian(
  * @param evalDeriv :: Flag to evaluate the first derivatives
  * @param evalHessian :: Flag to evaluate the Hessian (second derivatives)
  */
-void SeqDomain::rwpValDerivHessian(const CostFuncRwp &rwp, bool evalDeriv,
-                                   bool evalHessian) {
+void SeqDomain::rwpValDerivHessian(const CostFunctions::CostFuncRwp &rwp,
+                                   bool evalDeriv, bool evalHessian) {
   API::FunctionDomain_sptr domain;
   API::FunctionValues_sptr values;
   const size_t n = getNDomains();
diff --git a/Framework/CurveFitting/test/CalculateChiSquaredTest.h b/Framework/CurveFitting/test/Algorithms/CalculateChiSquaredTest.h
similarity index 99%
rename from Framework/CurveFitting/test/CalculateChiSquaredTest.h
rename to Framework/CurveFitting/test/Algorithms/CalculateChiSquaredTest.h
index 39fb96307a24056335df98216d80fd5641bf899b..fb29bda4b80738fd99f9a2d89838ab547850f606 100644
--- a/Framework/CurveFitting/test/CalculateChiSquaredTest.h
+++ b/Framework/CurveFitting/test/Algorithms/CalculateChiSquaredTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CalculateChiSquared.h"
+#include "MantidCurveFitting/Algorithms/CalculateChiSquared.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/FunctionValues.h"
@@ -16,7 +16,7 @@
 #include <boost/math/special_functions/fpclassify.hpp>
 #include <limits>
 
-using Mantid::CurveFitting::CalculateChiSquared;
+using Mantid::CurveFitting::Algorithms::CalculateChiSquared;
 using namespace Mantid;
 using namespace Mantid::API;
 
diff --git a/Framework/CurveFitting/test/CalculateGammaBackgroundTest.h b/Framework/CurveFitting/test/Algorithms/CalculateGammaBackgroundTest.h
similarity index 98%
rename from Framework/CurveFitting/test/CalculateGammaBackgroundTest.h
rename to Framework/CurveFitting/test/Algorithms/CalculateGammaBackgroundTest.h
index d5d7dbf487ae5e8493ce8aba1bb577456be3b310..502479b5f363c09a4312cdab88c88b92e233be80 100644
--- a/Framework/CurveFitting/test/CalculateGammaBackgroundTest.h
+++ b/Framework/CurveFitting/test/Algorithms/CalculateGammaBackgroundTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CalculateGammaBackground.h"
-#include "ComptonProfileTestHelpers.h"
+#include "MantidCurveFitting/Algorithms/CalculateGammaBackground.h"
+#include "../Functions/ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::CalculateGammaBackground;
+using Mantid::CurveFitting::Algorithms::CalculateGammaBackground;
 
 class CalculateGammaBackgroundTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/CalculateMSVesuvioTest.h b/Framework/CurveFitting/test/Algorithms/CalculateMSVesuvioTest.h
similarity index 98%
rename from Framework/CurveFitting/test/CalculateMSVesuvioTest.h
rename to Framework/CurveFitting/test/Algorithms/CalculateMSVesuvioTest.h
index 33f7f30b77a0252c38d2c692e8a529ea52de9d9f..f6eefbb0e35fd18579c0e7b04b0cc30398b88512 100644
--- a/Framework/CurveFitting/test/CalculateMSVesuvioTest.h
+++ b/Framework/CurveFitting/test/Algorithms/CalculateMSVesuvioTest.h
@@ -5,7 +5,7 @@
 
 #include "boost/version.hpp"
 
-#include "MantidCurveFitting/CalculateMSVesuvio.h"
+#include "MantidCurveFitting/Algorithms/CalculateMSVesuvio.h"
 #include "MantidGeometry/Instrument/Goniometer.h"
 #include "MantidGeometry/Instrument/Detector.h"
 #include "MantidGeometry/Objects/ShapeFactory.h"
@@ -13,9 +13,9 @@
 #include "MantidTestHelpers/ComponentCreationHelper.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
 
-#include "ComptonProfileTestHelpers.h"
+#include "../Functions/ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::CalculateMSVesuvio;
+using Mantid::CurveFitting::Algorithms::CalculateMSVesuvio;
 
 class CalculateMSVesuvioTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/ConvertToYSpaceTest.h b/Framework/CurveFitting/test/Algorithms/ConvertToYSpaceTest.h
similarity index 96%
rename from Framework/CurveFitting/test/ConvertToYSpaceTest.h
rename to Framework/CurveFitting/test/Algorithms/ConvertToYSpaceTest.h
index a3fed78b8baaa7c85c3ea0b918de70b4c4cc7fa3..839a9202dcdaa6ca483a5d439f97522d1dba0471 100644
--- a/Framework/CurveFitting/test/ConvertToYSpaceTest.h
+++ b/Framework/CurveFitting/test/Algorithms/ConvertToYSpaceTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ConvertToYSpace.h"
-#include "ComptonProfileTestHelpers.h"
+#include "MantidCurveFitting/Algorithms/ConvertToYSpace.h"
+#include "../Functions/ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::ConvertToYSpace;
+using Mantid::CurveFitting::Algorithms::ConvertToYSpace;
 
 class ConvertToYSpaceTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/ConvolveWorkspacesTest.h b/Framework/CurveFitting/test/Algorithms/ConvolveWorkspacesTest.h
similarity index 92%
rename from Framework/CurveFitting/test/ConvolveWorkspacesTest.h
rename to Framework/CurveFitting/test/Algorithms/ConvolveWorkspacesTest.h
index 0e748fa7ad2ea2d13e197185366269ced7bc6c73..fe9dc90f597485b84dc5257466b1ec3f8a180aed 100644
--- a/Framework/CurveFitting/test/ConvolveWorkspacesTest.h
+++ b/Framework/CurveFitting/test/Algorithms/ConvolveWorkspacesTest.h
@@ -5,8 +5,8 @@
 
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidAPI/AnalysisDataService.h"
-#include "MantidCurveFitting/ConvolveWorkspaces.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/ConvolveWorkspaces.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/IPeakFunction.h"
 #include "MantidAPI/TableRow.h"
@@ -15,12 +15,13 @@
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
 #include "MantidTestHelpers/FakeObjects.h"
-#include "MantidCurveFitting/Gaussian.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
 
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 
 class ConvolveWorkspacesTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/EstimatePeakErrorsTest.h b/Framework/CurveFitting/test/Algorithms/EstimatePeakErrorsTest.h
similarity index 98%
rename from Framework/CurveFitting/test/EstimatePeakErrorsTest.h
rename to Framework/CurveFitting/test/Algorithms/EstimatePeakErrorsTest.h
index 3ea8b1328cfa5098cdffdc2af7219645d00b2a4f..04baa92e562d387740477077d681853d54945792 100644
--- a/Framework/CurveFitting/test/EstimatePeakErrorsTest.h
+++ b/Framework/CurveFitting/test/Algorithms/EstimatePeakErrorsTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/EstimatePeakErrors.h"
+#include "MantidCurveFitting/Algorithms/EstimatePeakErrors.h"
 
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/AnalysisDataService.h"
@@ -19,6 +19,7 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace WorkspaceCreationHelper;
 
 class EstimatePeakErrorsTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/EvaluateFunctionTest.h b/Framework/CurveFitting/test/Algorithms/EvaluateFunctionTest.h
similarity index 98%
rename from Framework/CurveFitting/test/EvaluateFunctionTest.h
rename to Framework/CurveFitting/test/Algorithms/EvaluateFunctionTest.h
index 22e8a5aac0777d3003c7215b26ff7a1eb1f1f18f..cf8b80f4d991cbd76fe4a197c039c5eea0e15e6f 100644
--- a/Framework/CurveFitting/test/EvaluateFunctionTest.h
+++ b/Framework/CurveFitting/test/Algorithms/EvaluateFunctionTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/EvaluateFunction.h"
+#include "MantidCurveFitting/Algorithms/EvaluateFunction.h"
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -15,7 +15,7 @@
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidKernel/EmptyValues.h"
 
-using Mantid::CurveFitting::EvaluateFunction;
+using Mantid::CurveFitting::Algorithms::EvaluateFunction;
 using namespace Mantid;
 using namespace Mantid::API;
 
diff --git a/Framework/CurveFitting/test/FitPowderDiffPeaksTest.h b/Framework/CurveFitting/test/Algorithms/FitPowderDiffPeaksTest.h
similarity index 99%
rename from Framework/CurveFitting/test/FitPowderDiffPeaksTest.h
rename to Framework/CurveFitting/test/Algorithms/FitPowderDiffPeaksTest.h
index ffc3aa2b5be75b21602fda724cfd7ee954fd182e..2eea28afa5bc7c29710dadd82f362ece62d132fb 100644
--- a/Framework/CurveFitting/test/FitPowderDiffPeaksTest.h
+++ b/Framework/CurveFitting/test/Algorithms/FitPowderDiffPeaksTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/FitPowderDiffPeaks.h"
+#include "MantidCurveFitting/Algorithms/FitPowderDiffPeaks.h"
 #include "MantidDataHandling/LoadAscii.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -11,7 +11,7 @@
 #include "MantidAPI/TableRow.h"
 #include <fstream>
 
-using Mantid::CurveFitting::FitPowderDiffPeaks;
+using Mantid::CurveFitting::Algorithms::FitPowderDiffPeaks;
 
 using namespace std;
 using namespace Mantid;
@@ -32,7 +32,7 @@ public:
   /** Test init
     */
   void test_Init() {
-    CurveFitting::FitPowderDiffPeaks alg;
+    Algorithms::FitPowderDiffPeaks alg;
     TS_ASSERT_THROWS_NOTHING(alg.initialize());
     TS_ASSERT(alg.isInitialized());
 
diff --git a/Framework/CurveFitting/test/FitTest.h b/Framework/CurveFitting/test/Algorithms/FitTest.h
similarity index 98%
rename from Framework/CurveFitting/test/FitTest.h
rename to Framework/CurveFitting/test/Algorithms/FitTest.h
index d4ce164b49008fd56dfc082016524bab1e9a7743..94b27088b284b5188b077158fe2d7ab871c110f7 100644
--- a/Framework/CurveFitting/test/FitTest.h
+++ b/Framework/CurveFitting/test/Algorithms/FitTest.h
@@ -7,11 +7,12 @@
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidAPI/IFuncMinimizer.h"
 #include "MantidAPI/FuncMinimizerFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "FitTestHelpers.h"
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::API;
 
 namespace {
diff --git a/Framework/CurveFitting/test/FitTestHelpers.h b/Framework/CurveFitting/test/Algorithms/FitTestHelpers.h
similarity index 100%
rename from Framework/CurveFitting/test/FitTestHelpers.h
rename to Framework/CurveFitting/test/Algorithms/FitTestHelpers.h
diff --git a/Framework/CurveFitting/test/LeBailFitTest.h b/Framework/CurveFitting/test/Algorithms/LeBailFitTest.h
similarity index 99%
rename from Framework/CurveFitting/test/LeBailFitTest.h
rename to Framework/CurveFitting/test/Algorithms/LeBailFitTest.h
index 0a680a21882ea35e5dd8b40b6be94e28635dc523..363ef9c91010ca6812518c889f784cbca4f3f335 100644
--- a/Framework/CurveFitting/test/LeBailFitTest.h
+++ b/Framework/CurveFitting/test/Algorithms/LeBailFitTest.h
@@ -5,7 +5,7 @@
 #include "MantidKernel/Timer.h"
 #include "MantidKernel/System.h"
 
-#include "MantidCurveFitting/LeBailFit.h"
+#include "MantidCurveFitting/Algorithms/LeBailFit.h"
 #include "MantidDataHandling/LoadAscii.h"
 
 #include <fstream>
@@ -28,7 +28,7 @@ using namespace WorkspaceCreationHelper;
 
 using namespace std;
 
-using Mantid::CurveFitting::LeBailFit;
+using Mantid::CurveFitting::Algorithms::LeBailFit;
 
 class LeBailFitTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/LeBailFunctionTest.h b/Framework/CurveFitting/test/Algorithms/LeBailFunctionTest.h
similarity index 99%
rename from Framework/CurveFitting/test/LeBailFunctionTest.h
rename to Framework/CurveFitting/test/Algorithms/LeBailFunctionTest.h
index c4f22cd43abfd1af0e8d693dfe58b3d07a6968f8..3c0fbdc897d010019117c62fe14533fb34c997a9 100644
--- a/Framework/CurveFitting/test/LeBailFunctionTest.h
+++ b/Framework/CurveFitting/test/Algorithms/LeBailFunctionTest.h
@@ -7,10 +7,11 @@
 #include "MantidKernel/System.h"
 #include <fstream>
 
-#include "MantidCurveFitting/LeBailFunction.h"
+#include "MantidCurveFitting/Algorithms/LeBailFunction.h"
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::API;
 
 using namespace std;
diff --git a/Framework/CurveFitting/test/NormaliseByPeakAreaTest.h b/Framework/CurveFitting/test/Algorithms/NormaliseByPeakAreaTest.h
similarity index 98%
rename from Framework/CurveFitting/test/NormaliseByPeakAreaTest.h
rename to Framework/CurveFitting/test/Algorithms/NormaliseByPeakAreaTest.h
index 42e26ed2efc5fbadba4d4a247a2dcb7b48351e0d..30d27a5a9b32834fae81aba7fc65f4d3fd6e56a3 100644
--- a/Framework/CurveFitting/test/NormaliseByPeakAreaTest.h
+++ b/Framework/CurveFitting/test/Algorithms/NormaliseByPeakAreaTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/NormaliseByPeakArea.h"
-#include "ComptonProfileTestHelpers.h"
+#include "MantidCurveFitting/Algorithms/NormaliseByPeakArea.h"
+#include "../Functions/ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::NormaliseByPeakArea;
+using Mantid::CurveFitting::Algorithms::NormaliseByPeakArea;
 
 class NormaliseByPeakAreaTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/PawleyFitTest.h b/Framework/CurveFitting/test/Algorithms/PawleyFitTest.h
similarity index 98%
rename from Framework/CurveFitting/test/PawleyFitTest.h
rename to Framework/CurveFitting/test/Algorithms/PawleyFitTest.h
index 3c99605f3d889689ca20cd3a8f375a4c09f0a93f..1766df896cd2ddba7d2486f7210f2496a25dd0fd 100644
--- a/Framework/CurveFitting/test/PawleyFitTest.h
+++ b/Framework/CurveFitting/test/Algorithms/PawleyFitTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PawleyFit.h"
+#include "MantidCurveFitting/Algorithms/PawleyFit.h"
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/TableRow.h"
@@ -11,8 +11,8 @@
 #include "MantidKernel/V3D.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
 
-using Mantid::CurveFitting::PawleyFit;
-using Mantid::CurveFitting::V3DFromHKLColumnExtractor;
+using Mantid::CurveFitting::Algorithms::PawleyFit;
+using Mantid::CurveFitting::Algorithms::V3DFromHKLColumnExtractor;
 using namespace Mantid::API;
 using namespace Mantid::Kernel;
 
diff --git a/Framework/CurveFitting/test/PlotPeakByLogValueTest.h b/Framework/CurveFitting/test/Algorithms/PlotPeakByLogValueTest.h
similarity index 99%
rename from Framework/CurveFitting/test/PlotPeakByLogValueTest.h
rename to Framework/CurveFitting/test/Algorithms/PlotPeakByLogValueTest.h
index 03947a4ae12f68f9ef830eeab19346b35e5fa4f7..9fb02f3eff1711f19136fd8add1b58a3658e50b4 100644
--- a/Framework/CurveFitting/test/PlotPeakByLogValueTest.h
+++ b/Framework/CurveFitting/test/Algorithms/PlotPeakByLogValueTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PlotPeakByLogValue.h"
+#include "MantidCurveFitting/Algorithms/PlotPeakByLogValue.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/TableRow.h"
@@ -26,6 +26,7 @@ using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 
 typedef Mantid::DataObjects::Workspace2D_sptr WS_type;
 typedef Mantid::DataObjects::TableWorkspace_sptr TWS_type;
diff --git a/Framework/CurveFitting/test/RefinePowderInstrumentParameters3Test.h b/Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParameters3Test.h
similarity index 99%
rename from Framework/CurveFitting/test/RefinePowderInstrumentParameters3Test.h
rename to Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParameters3Test.h
index a77678e9ebccb2dae4462d4d8d0611b4fc1c4f26..dedf1a1c02d6251cc27152f26dde9d4820c39563 100644
--- a/Framework/CurveFitting/test/RefinePowderInstrumentParameters3Test.h
+++ b/Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParameters3Test.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/RefinePowderInstrumentParameters3.h"
+#include "MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters3.h"
 
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -12,7 +12,7 @@
 
 #include <fstream>
 
-using Mantid::CurveFitting::RefinePowderInstrumentParameters3;
+using Mantid::CurveFitting::Algorithms::RefinePowderInstrumentParameters3;
 
 using namespace Mantid;
 using namespace Mantid::DataObjects;
diff --git a/Framework/CurveFitting/test/RefinePowderInstrumentParametersTest.h b/Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParametersTest.h
similarity index 98%
rename from Framework/CurveFitting/test/RefinePowderInstrumentParametersTest.h
rename to Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParametersTest.h
index 421e4728d18724aff5a18509d3079997d7af5c81..fccdacb20db30175b3a3fa7c457b9ca9d9cbff43 100644
--- a/Framework/CurveFitting/test/RefinePowderInstrumentParametersTest.h
+++ b/Framework/CurveFitting/test/Algorithms/RefinePowderInstrumentParametersTest.h
@@ -3,14 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/RefinePowderInstrumentParameters.h"
+#include "MantidCurveFitting/Algorithms/RefinePowderInstrumentParameters.h"
 #include "MantidAPI/MatrixWorkspace.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/TableRow.h"
 #include <fstream>
 
-using Mantid::CurveFitting::RefinePowderInstrumentParameters;
+using Mantid::CurveFitting::Algorithms::RefinePowderInstrumentParameters;
 using namespace Mantid;
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
@@ -153,7 +153,7 @@ public:
                                                  geomparamws);
 
     // 2. Set up algorithm parameters
-    CurveFitting::RefinePowderInstrumentParameters alg;
+    RefinePowderInstrumentParameters alg;
     TS_ASSERT_THROWS_NOTHING(alg.initialize());
     TS_ASSERT(alg.isInitialized());
 
@@ -236,7 +236,7 @@ public:
                                                  geomparamws);
 
     // 2. Set up algorithm parameters
-    CurveFitting::RefinePowderInstrumentParameters alg;
+    RefinePowderInstrumentParameters alg;
     TS_ASSERT_THROWS_NOTHING(alg.initialize());
     TS_ASSERT(alg.isInitialized());
 
diff --git a/Framework/CurveFitting/test/SeqDomainSpectrumCreatorTest.h b/Framework/CurveFitting/test/Algorithms/SeqDomainSpectrumCreatorTest.h
similarity index 99%
rename from Framework/CurveFitting/test/SeqDomainSpectrumCreatorTest.h
rename to Framework/CurveFitting/test/Algorithms/SeqDomainSpectrumCreatorTest.h
index 4cf5c605467e89f40040a1d00da1b3cea7d9b196..077ca4fd6b7d0e7eaf1743731055c1fa0de27f03 100644
--- a/Framework/CurveFitting/test/SeqDomainSpectrumCreatorTest.h
+++ b/Framework/CurveFitting/test/Algorithms/SeqDomainSpectrumCreatorTest.h
@@ -10,7 +10,7 @@
 #include "MantidAPI/IFunction1DSpectrum.h"
 #include "MantidAPI/ParamFunction.h"
 
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/TableRow.h"
 #include "MantidAPI/FunctionFactory.h"
 
@@ -20,6 +20,7 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 
 class SeqDomainSpectrumCreatorTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/SplineBackgroundTest.h b/Framework/CurveFitting/test/Algorithms/SplineBackgroundTest.h
similarity index 96%
rename from Framework/CurveFitting/test/SplineBackgroundTest.h
rename to Framework/CurveFitting/test/Algorithms/SplineBackgroundTest.h
index 935ed917426390465f5b952deb4f385aba20c967..4608bff0880d02351a3143f238691427d8a7896f 100644
--- a/Framework/CurveFitting/test/SplineBackgroundTest.h
+++ b/Framework/CurveFitting/test/Algorithms/SplineBackgroundTest.h
@@ -2,7 +2,7 @@
 #define SPLINEBACKGROUNDTEST_H_
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/SplineBackground.h"
+#include "MantidCurveFitting/Algorithms/SplineBackground.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidAPI/MatrixWorkspace.h"
diff --git a/Framework/CurveFitting/test/SplineInterpolationTest.h b/Framework/CurveFitting/test/Algorithms/SplineInterpolationTest.h
similarity index 97%
rename from Framework/CurveFitting/test/SplineInterpolationTest.h
rename to Framework/CurveFitting/test/Algorithms/SplineInterpolationTest.h
index 43b5adc90e74c081932edbe431ce6a50dcd11081..e55dc97c987ca523d7b8ac445a20e1c9ea1e0f2e 100644
--- a/Framework/CurveFitting/test/SplineInterpolationTest.h
+++ b/Framework/CurveFitting/test/Algorithms/SplineInterpolationTest.h
@@ -3,12 +3,12 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/SplineInterpolation.h"
+#include "MantidCurveFitting/Algorithms/SplineInterpolation.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
 #include "MantidAPI/NumericAxis.h"
 #include "MantidAPI/TextAxis.h"
 
-using Mantid::CurveFitting::SplineInterpolation;
+using Mantid::CurveFitting::Algorithms::SplineInterpolation;
 using namespace Mantid::API;
 
 class SplineInterpolationTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/SplineSmoothingTest.h b/Framework/CurveFitting/test/Algorithms/SplineSmoothingTest.h
similarity index 96%
rename from Framework/CurveFitting/test/SplineSmoothingTest.h
rename to Framework/CurveFitting/test/Algorithms/SplineSmoothingTest.h
index cc28ba8c4361c88f6d91c53231d3120d033fdc9b..bc88af1750e9c0de3be3a6940fd5c9667859b100 100644
--- a/Framework/CurveFitting/test/SplineSmoothingTest.h
+++ b/Framework/CurveFitting/test/Algorithms/SplineSmoothingTest.h
@@ -4,9 +4,9 @@
 #include <cxxtest/TestSuite.h>
 
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
-#include "MantidCurveFitting/SplineSmoothing.h"
+#include "MantidCurveFitting/Algorithms/SplineSmoothing.h"
 
-using Mantid::CurveFitting::SplineSmoothing;
+using Mantid::CurveFitting::Algorithms::SplineSmoothing;
 
 class SplineSmoothingTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/CompositeFunctionTest.h b/Framework/CurveFitting/test/CompositeFunctionTest.h
index 9ee2946430933592a048a59e1f179eee728fcb8a..62a5cc3a1e5a15205b4504fafbb040b3f1543b75 100644
--- a/Framework/CurveFitting/test/CompositeFunctionTest.h
+++ b/Framework/CurveFitting/test/CompositeFunctionTest.h
@@ -5,7 +5,7 @@
 
 #include "MantidAPI/IPeakFunction.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/TableRow.h"
@@ -13,12 +13,12 @@
 #include "MantidKernel/ConfigService.h"
 #include "MantidAPI/FrameworkManager.h"
 
-#include "MantidCurveFitting/SimplexMinimizer.h"
-#include "MantidCurveFitting/BFGS_Minimizer.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
-#include "MantidCurveFitting/ExpDecay.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 #include "MantidCurveFitting/GSLJacobian.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -28,6 +28,10 @@
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::FuncMinimisers;
+using namespace Mantid::CurveFitting::CostFunctions;
 
 typedef Mantid::DataObjects::Workspace2D_sptr WS_type;
 typedef Mantid::DataObjects::TableWorkspace_sptr TWS_type;
diff --git a/Framework/CurveFitting/test/BoundaryConstraintTest.h b/Framework/CurveFitting/test/Constraints/BoundaryConstraintTest.h
similarity index 95%
rename from Framework/CurveFitting/test/BoundaryConstraintTest.h
rename to Framework/CurveFitting/test/Constraints/BoundaryConstraintTest.h
index e23d1847af1eadd572844b8ece762178eb6588c5..6e340def5735e36eb437735f2ef22b333dbe501e 100644
--- a/Framework/CurveFitting/test/BoundaryConstraintTest.h
+++ b/Framework/CurveFitting/test/Constraints/BoundaryConstraintTest.h
@@ -3,9 +3,9 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Lorentzian.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/Lorentzian.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -15,6 +15,8 @@
 
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Constraints;
 
 class BoundaryConstraintTest : public CxxTest::TestSuite {
 public:
@@ -39,7 +41,7 @@ public:
     TS_ASSERT(bc.hasUpper());
 
     BoundaryConstraint bc2;
-    ;
+
     bc2.reset(&gaus, 2);
     bc2.setBounds(10, 20);
 
diff --git a/Framework/CurveFitting/test/CostFuncUnweightedLeastSquaresTest.h b/Framework/CurveFitting/test/CostFunctions/CostFuncUnweightedLeastSquaresTest.h
similarity index 95%
rename from Framework/CurveFitting/test/CostFuncUnweightedLeastSquaresTest.h
rename to Framework/CurveFitting/test/CostFunctions/CostFuncUnweightedLeastSquaresTest.h
index 7604eac76910549eb1946377693e565aed930d03..6b79954f49eac2fdc6c250fb04dec93e158ad58b 100644
--- a/Framework/CurveFitting/test/CostFuncUnweightedLeastSquaresTest.h
+++ b/Framework/CurveFitting/test/CostFunctions/CostFuncUnweightedLeastSquaresTest.h
@@ -5,11 +5,11 @@
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionFactory.h"
 
-#include "MantidCurveFitting/CostFuncUnweightedLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncUnweightedLeastSquares.h"
 
 #include <boost/make_shared.hpp>
 
-using Mantid::CurveFitting::CostFuncUnweightedLeastSquares;
+using Mantid::CurveFitting::CostFunctions::CostFuncUnweightedLeastSquares;
 using namespace Mantid::API;
 
 class CostFuncUnweightedLeastSquaresTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/LeastSquaresTest.h b/Framework/CurveFitting/test/CostFunctions/LeastSquaresTest.h
similarity index 94%
rename from Framework/CurveFitting/test/LeastSquaresTest.h
rename to Framework/CurveFitting/test/CostFunctions/LeastSquaresTest.h
index 3f49a8cb1103c33ff00f0a512d4b4bd3f1a26417..425d34058f918ca2c14b4cd84a90a9fe86ded20b 100644
--- a/Framework/CurveFitting/test/LeastSquaresTest.h
+++ b/Framework/CurveFitting/test/CostFunctions/LeastSquaresTest.h
@@ -3,24 +3,27 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/CostFuncRwp.h"
-#include "MantidCurveFitting/SimplexMinimizer.h"
-#include "MantidCurveFitting/BFGS_Minimizer.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
-#include "MantidCurveFitting/ExpDecay.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncRwp.h"
+#include "MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/Gaussian.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
 
 #include <gsl/gsl_blas.h>
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class LeastSquaresTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/FitMWTest.h b/Framework/CurveFitting/test/FitMWTest.h
index 78782f80d0678cdc1fd95ae41b4ca82ae54c3d68..00f938a976097564634c962ab59e1d74bf45e6a0 100644
--- a/Framework/CurveFitting/test/FitMWTest.h
+++ b/Framework/CurveFitting/test/FitMWTest.h
@@ -5,13 +5,13 @@
 #include "MantidTestHelpers/FakeObjects.h"
 
 #include "MantidCurveFitting/FitMW.h"
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/UserFunction.h"
-#include "MantidCurveFitting/ExpDecay.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidCurveFitting/SeqDomain.h"
-#include "MantidCurveFitting/Convolution.h"
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Polynomial.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
 
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/FrameworkManager.h"
@@ -29,6 +29,8 @@
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class FitMWTest : public CxxTest::TestSuite {
@@ -51,7 +53,7 @@ public:
     fun->setParameter("Height", 1.);
     fun->setParameter("Lifetime", 1.0);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setProperty("Function", fun);
@@ -159,7 +161,7 @@ public:
     fun->setParameter("Height", 1.);
     fun->setParameter("Lifetime", 1.);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setProperty("Function", fun);
diff --git a/Framework/CurveFitting/test/BFGSTest.h b/Framework/CurveFitting/test/FuncMinimizers/BFGSTest.h
similarity index 94%
rename from Framework/CurveFitting/test/BFGSTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/BFGSTest.h
index f0c03cb3e3792a1e600f9eaacdb761c0d10fcacf..0343e6677710560c70b4180980c6f01dfda4cbb2 100644
--- a/Framework/CurveFitting/test/BFGSTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/BFGSTest.h
@@ -3,13 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/BFGS_Minimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/BFGS_Minimizer.h"
 #include "MantidAPI/ICostFunction.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
 using namespace Mantid::API;
 
 class BFGSTestCostFunction : public ICostFunction {
diff --git a/Framework/CurveFitting/test/DampingMinimizerTest.h b/Framework/CurveFitting/test/FuncMinimizers/DampingMinimizerTest.h
similarity index 95%
rename from Framework/CurveFitting/test/DampingMinimizerTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/DampingMinimizerTest.h
index 61ce4aa560fc51076541d6c0ea00f39367759c01..1e8d08c13f590156ab50f463a09e6ea4e3714271 100644
--- a/Framework/CurveFitting/test/DampingMinimizerTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/DampingMinimizerTest.h
@@ -3,17 +3,21 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/DampingMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/DampingMinimizer.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Constraints;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class DampingMinimizerTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/FABADAMinimizerTest.h b/Framework/CurveFitting/test/FuncMinimizers/FABADAMinimizerTest.h
similarity index 94%
rename from Framework/CurveFitting/test/FABADAMinimizerTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/FABADAMinimizerTest.h
index 29b304014ebc1c720151f74adc0cfdae6d961be1..73f6508f42790dfc83079c5dcf4796ff14c0bf6b 100644
--- a/Framework/CurveFitting/test/FABADAMinimizerTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/FABADAMinimizerTest.h
@@ -3,20 +3,22 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/FABADAMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/FABADAMinimizer.h"
 
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/AlgorithmManager.h"
 
-#include "MantidCurveFitting/ExpDecay.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
 #include "MantidKernel/PropertyManager.h"
 #include "MantidTestHelpers/FakeObjects.h"
 #include "MantidKernel/Exception.h"
 
-using Mantid::CurveFitting::FABADAMinimizer;
+using Mantid::CurveFitting::FuncMinimisers::FABADAMinimizer;
 using namespace Mantid::API;
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 
 class FABADAMinimizerTest : public CxxTest::TestSuite {
 public:
@@ -34,7 +36,7 @@ public:
     fun->setParameter("Height", 8.);
     fun->setParameter("Lifetime", 1.0);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setRethrows(true);
@@ -143,7 +145,7 @@ public:
     fun->setParameter("Height", 1.);
     fun->setParameter("Lifetime", 1.0);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setRethrows(true);
diff --git a/Framework/CurveFitting/test/FRConjugateGradientTest.h b/Framework/CurveFitting/test/FuncMinimizers/FRConjugateGradientTest.h
similarity index 94%
rename from Framework/CurveFitting/test/FRConjugateGradientTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/FRConjugateGradientTest.h
index 34028a02dd1213cb225a4deb8173f35f9de845e1..12629afb2dbd101ef72e3d9cbea61a74c1c13698 100644
--- a/Framework/CurveFitting/test/FRConjugateGradientTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/FRConjugateGradientTest.h
@@ -3,13 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/FRConjugateGradientMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/FRConjugateGradientMinimizer.h"
 #include "MantidAPI/ICostFunction.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
 using namespace Mantid::API;
 
 class FRConjugateGradientTestCostFunction : public ICostFunction {
diff --git a/Framework/CurveFitting/test/LevenbergMarquardtMDTest.h b/Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtMDTest.h
similarity index 95%
rename from Framework/CurveFitting/test/LevenbergMarquardtMDTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtMDTest.h
index 93ae0e5dd0a8c4fbe019e61fd35211a07ad5aadd..edaeec639e087ddf475094d1d23c41b66cccb0ea 100644
--- a/Framework/CurveFitting/test/LevenbergMarquardtMDTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtMDTest.h
@@ -3,17 +3,21 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Constraints;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class LevenbergMarquardtMDTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/LevenbergMarquardtTest.h b/Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtTest.h
similarity index 95%
rename from Framework/CurveFitting/test/LevenbergMarquardtTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtTest.h
index 30a690d98b9fd530976cf180cb1616a2461c7a0b..359712feb5f798bacd3398eb7e15d1193dac7f58 100644
--- a/Framework/CurveFitting/test/LevenbergMarquardtTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/LevenbergMarquardtTest.h
@@ -3,17 +3,21 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/LevenbergMarquardtMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMinimizer.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Constraints;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class LevenbergMarquardtTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/PRConjugateGradientTest.h b/Framework/CurveFitting/test/FuncMinimizers/PRConjugateGradientTest.h
similarity index 94%
rename from Framework/CurveFitting/test/PRConjugateGradientTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/PRConjugateGradientTest.h
index b5a8a910e1492319ec72a65f5f6d2d8a0e7d2cdd..6f250d93aa4a3ff039555979831aac6ca411556b 100644
--- a/Framework/CurveFitting/test/PRConjugateGradientTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/PRConjugateGradientTest.h
@@ -3,13 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PRConjugateGradientMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/PRConjugateGradientMinimizer.h"
 #include "MantidAPI/ICostFunction.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
 using namespace Mantid::API;
 
 class PRConjugateGradientTestCostFunction : public ICostFunction {
diff --git a/Framework/CurveFitting/test/SimplexTest.h b/Framework/CurveFitting/test/FuncMinimizers/SimplexTest.h
similarity index 93%
rename from Framework/CurveFitting/test/SimplexTest.h
rename to Framework/CurveFitting/test/FuncMinimizers/SimplexTest.h
index 95811e161315ccb4ef59c832762cc5b792392a31..6edf55ccb183f24d904837fcf25fcd9021132fc0 100644
--- a/Framework/CurveFitting/test/SimplexTest.h
+++ b/Framework/CurveFitting/test/FuncMinimizers/SimplexTest.h
@@ -3,13 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/SimplexMinimizer.h"
+#include "MantidCurveFitting/FuncMinimizers/SimplexMinimizer.h"
 #include "MantidAPI/ICostFunction.h"
 
 #include <sstream>
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::FuncMinimisers;
 using namespace Mantid::API;
 
 class SimplexTestCostFunction : public ICostFunction {
diff --git a/Framework/CurveFitting/test/FunctionParameterDecoratorFitTest.h b/Framework/CurveFitting/test/FunctionParameterDecoratorFitTest.h
index c7f60ebf936da427adc02bfe5a1b4a01c6b27288..699b840af67808e1503a8155ce93469c96282a33 100644
--- a/Framework/CurveFitting/test/FunctionParameterDecoratorFitTest.h
+++ b/Framework/CurveFitting/test/FunctionParameterDecoratorFitTest.h
@@ -9,13 +9,14 @@
 #include "MantidAPI/FunctionParameterDecorator.h"
 #include "MantidDataObjects/Workspace2D.h"
 
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
 #include <boost/make_shared.hpp>
 
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
 
 class FunctionParameterDecoratorFitTest;
 
diff --git a/Framework/CurveFitting/test/AbragamTest.h b/Framework/CurveFitting/test/Functions/AbragamTest.h
similarity index 91%
rename from Framework/CurveFitting/test/AbragamTest.h
rename to Framework/CurveFitting/test/Functions/AbragamTest.h
index 342eb7360e7b6942a94cd021848e1f6d4e67c333..387926477b7d2f73b443265d2ce80dfafbcd571c 100644
--- a/Framework/CurveFitting/test/AbragamTest.h
+++ b/Framework/CurveFitting/test/Functions/AbragamTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Abragam.h"
+#include "MantidCurveFitting/Functions/Abragam.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +19,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 
 class AbragamTest : public CxxTest::TestSuite {
@@ -54,7 +56,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/BSplineTest.h b/Framework/CurveFitting/test/Functions/BSplineTest.h
similarity index 96%
rename from Framework/CurveFitting/test/BSplineTest.h
rename to Framework/CurveFitting/test/Functions/BSplineTest.h
index b71c15a4ae356f0c2b8cc7afba484930f1b84e53..a504230e745db1cdc97040a74e634ad084a9351a 100644
--- a/Framework/CurveFitting/test/BSplineTest.h
+++ b/Framework/CurveFitting/test/Functions/BSplineTest.h
@@ -1,10 +1,10 @@
 #ifndef BSPLINETEST_H_
 #define BSPLINETEST_H_
 
-#include "MantidCurveFitting/BSpline.h"
-#include "MantidCurveFitting/UserFunction.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/Functions/BSpline.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -15,6 +15,8 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::CostFunctions;
 
 class BSplineTest : public CxxTest::TestSuite {
 public:
@@ -344,7 +346,7 @@ private:
     boost::shared_ptr<CostFuncLeastSquares> costFun(new CostFuncLeastSquares);
     costFun->setFittingFunction(bsp, domain, values);
 
-    LevenbergMarquardtMDMinimizer s;
+    FuncMinimisers::LevenbergMarquardtMDMinimizer s;
     s.initialize(costFun);
     TS_ASSERT(s.minimize());
     return costFun->val();
diff --git a/Framework/CurveFitting/test/BackToBackExponentialTest.h b/Framework/CurveFitting/test/Functions/BackToBackExponentialTest.h
similarity index 97%
rename from Framework/CurveFitting/test/BackToBackExponentialTest.h
rename to Framework/CurveFitting/test/Functions/BackToBackExponentialTest.h
index bd30cef1e0906c2d5374fcd99603e57df1b73c4e..764131715ec7f1abb6e84a8ea97b90920846d6a7 100644
--- a/Framework/CurveFitting/test/BackToBackExponentialTest.h
+++ b/Framework/CurveFitting/test/Functions/BackToBackExponentialTest.h
@@ -3,13 +3,13 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/BackToBackExponential.h"
+#include "MantidCurveFitting/Functions/BackToBackExponential.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 
 #include <cmath>
 
-using Mantid::CurveFitting::BackToBackExponential;
+using Mantid::CurveFitting::Functions::BackToBackExponential;
 
 namespace {
 /**
diff --git a/Framework/CurveFitting/test/BivariateNormalTest.h b/Framework/CurveFitting/test/Functions/BivariateNormalTest.h
similarity index 98%
rename from Framework/CurveFitting/test/BivariateNormalTest.h
rename to Framework/CurveFitting/test/Functions/BivariateNormalTest.h
index 9645cd95927d825c4400c83f291f898497ae93a9..c169d9787aa554cdd55bc0a05c1333a376ec90a9 100644
--- a/Framework/CurveFitting/test/BivariateNormalTest.h
+++ b/Framework/CurveFitting/test/Functions/BivariateNormalTest.h
@@ -9,7 +9,7 @@
 #define BIVARIATENORMALTEST_H_
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/BivariateNormal.h"
+#include "MantidCurveFitting/Functions/BivariateNormal.h"
 #include "MantidKernel/Matrix.h"
 #include "MantidAPI/Jacobian.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -31,6 +31,7 @@ using namespace Mantid::API;
 using namespace Mantid::Geometry;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 /**
  * Used for testing only
  */
diff --git a/Framework/CurveFitting/test/Bk2BkExpConvPVTest.h b/Framework/CurveFitting/test/Functions/Bk2BkExpConvPVTest.h
similarity index 96%
rename from Framework/CurveFitting/test/Bk2BkExpConvPVTest.h
rename to Framework/CurveFitting/test/Functions/Bk2BkExpConvPVTest.h
index 46cb015c0f921e2af7a4bcf3accee7348be2bafb..95fe716309da8ae2f705171fdcb9efde9d0f810e 100644
--- a/Framework/CurveFitting/test/Bk2BkExpConvPVTest.h
+++ b/Framework/CurveFitting/test/Functions/Bk2BkExpConvPVTest.h
@@ -6,13 +6,15 @@
 #include "MantidKernel/System.h"
 #include <fstream>
 
-#include "MantidCurveFitting/Bk2BkExpConvPV.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/Bk2BkExpConvPV.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidDataObjects/Workspace2D.h"
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class Bk2BkExpConvPVTest : public CxxTest::TestSuite {
@@ -156,7 +158,7 @@ public:
               << std::endl;
 
     // 3. Set fit
-    Fit fitalg;
+    Algorithms::Fit fitalg;
     fitalg.initialize();
     TS_ASSERT(fitalg.isInitialized());
 
diff --git a/Framework/CurveFitting/test/ChebfunBaseTest.h b/Framework/CurveFitting/test/Functions/ChebfunBaseTest.h
similarity index 98%
rename from Framework/CurveFitting/test/ChebfunBaseTest.h
rename to Framework/CurveFitting/test/Functions/ChebfunBaseTest.h
index 0d2a8fb5fefc059bcf34a1f666c8419caaaba3ed..175fa53033dff71443d3260d7d825f4f89c94d51 100644
--- a/Framework/CurveFitting/test/ChebfunBaseTest.h
+++ b/Framework/CurveFitting/test/Functions/ChebfunBaseTest.h
@@ -3,12 +3,13 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ChebfunBase.h"
+#include "MantidCurveFitting/Functions/ChebfunBase.h"
 #include <cmath>
 
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 
 double Sin(double x) { return sin(x); }
 double MinusSin(double x) { return -sin(x); }
diff --git a/Framework/CurveFitting/test/ChebyshevTest.h b/Framework/CurveFitting/test/Functions/ChebyshevTest.h
similarity index 94%
rename from Framework/CurveFitting/test/ChebyshevTest.h
rename to Framework/CurveFitting/test/Functions/ChebyshevTest.h
index 7cad35f6467b458528ae24878517dd66a89ad8c8..2602cc30011f506b35969d80ec4fbc5d25a0265a 100644
--- a/Framework/CurveFitting/test/ChebyshevTest.h
+++ b/Framework/CurveFitting/test/Functions/ChebyshevTest.h
@@ -3,8 +3,8 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Chebyshev.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/Chebyshev.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
@@ -14,6 +14,8 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 
 class ChebyshevTest : public CxxTest::TestSuite {
 public:
@@ -59,7 +61,7 @@ public:
     Chebyshev cheb;
     cheb.setAttributeValue("n", 3);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setPropertyValue("Function", cheb.asString());
@@ -116,7 +118,7 @@ public:
     cheb.setAttributeValue("StartX", -10.0);
     cheb.setAttributeValue("EndX", 10.0);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setPropertyValue("Function", cheb.asString());
diff --git a/Framework/CurveFitting/test/ComptonPeakProfileTest.h b/Framework/CurveFitting/test/Functions/ComptonPeakProfileTest.h
similarity index 95%
rename from Framework/CurveFitting/test/ComptonPeakProfileTest.h
rename to Framework/CurveFitting/test/Functions/ComptonPeakProfileTest.h
index b66b087aa802c527caca4a6d8e1fd330d5e621b6..1d5a8488d99c3a143fd1ed5df9d99c4d97e3a7e6 100644
--- a/Framework/CurveFitting/test/ComptonPeakProfileTest.h
+++ b/Framework/CurveFitting/test/Functions/ComptonPeakProfileTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ComptonPeakProfile.h"
+#include "MantidCurveFitting/Functions/ComptonPeakProfile.h"
 #include "ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::ComptonPeakProfile;
+using Mantid::CurveFitting::Functions::ComptonPeakProfile;
 
 class ComptonPeakProfileTest : public CxxTest::TestSuite {
 
diff --git a/Framework/CurveFitting/test/ComptonProfileTest.h b/Framework/CurveFitting/test/Functions/ComptonProfileTest.h
similarity index 95%
rename from Framework/CurveFitting/test/ComptonProfileTest.h
rename to Framework/CurveFitting/test/Functions/ComptonProfileTest.h
index f1a33b8d848929d5101ef39af333cc2e05d9e482..2d21d6981cac2ea1c2bdd06f2e744938371e4cf7 100644
--- a/Framework/CurveFitting/test/ComptonProfileTest.h
+++ b/Framework/CurveFitting/test/Functions/ComptonProfileTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ComptonProfile.h"
+#include "MantidCurveFitting/Functions/ComptonProfile.h"
 #include <boost/make_shared.hpp>
 
-using Mantid::CurveFitting::ComptonProfile;
+using Mantid::CurveFitting::Functions::ComptonProfile;
 
 class ComptonProfileTest : public CxxTest::TestSuite {
 
diff --git a/Framework/CurveFitting/test/ComptonProfileTestHelpers.h b/Framework/CurveFitting/test/Functions/ComptonProfileTestHelpers.h
similarity index 100%
rename from Framework/CurveFitting/test/ComptonProfileTestHelpers.h
rename to Framework/CurveFitting/test/Functions/ComptonProfileTestHelpers.h
diff --git a/Framework/CurveFitting/test/ComptonScatteringCountRateTest.h b/Framework/CurveFitting/test/Functions/ComptonScatteringCountRateTest.h
similarity index 97%
rename from Framework/CurveFitting/test/ComptonScatteringCountRateTest.h
rename to Framework/CurveFitting/test/Functions/ComptonScatteringCountRateTest.h
index 714776b1bef083fc29139c04106ce15933024a16..a9fe90bd3babc3a60a9d8cf51350bd93db538fe3 100644
--- a/Framework/CurveFitting/test/ComptonScatteringCountRateTest.h
+++ b/Framework/CurveFitting/test/Functions/ComptonScatteringCountRateTest.h
@@ -2,9 +2,12 @@
 #define MANTID_CURVEFITTING_COMPTONSCATTERINGCOUNTRATETEST_H_
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/ComptonScatteringCountRate.h"
+#include "MantidCurveFitting/Functions/ComptonScatteringCountRate.h"
 #include "ComptonProfileTestHelpers.h"
 
+using Mantid::CurveFitting::Functions::ComptonScatteringCountRate;
+using Mantid::CurveFitting::Functions::ComptonProfile;
+
 class ComptonScatteringCountRateTest : public CxxTest::TestSuite {
 public:
   // This pair of boilerplate methods prevent the suite being created statically
@@ -209,7 +212,7 @@ public:
 private:
   /// A simple working object to use for the testing
   /// Provides a canned answer of 1 for the massProfile
-  class ComptonProfileStub : public Mantid::CurveFitting::ComptonProfile {
+  class ComptonProfileStub : public ComptonProfile {
   public:
     ComptonProfileStub() : ComptonProfile() {
       declareParameter("Width", 1.0);
@@ -289,7 +292,7 @@ private:
     return func;
   }
 
-  boost::shared_ptr<Mantid::CurveFitting::ComptonScatteringCountRate>
+  boost::shared_ptr<ComptonScatteringCountRate>
   createFunctionNoBackground(const bool useTwoIntensityFuncAsFirst = false) {
     boost::shared_ptr<ComptonProfileStub> func1;
     if (useTwoIntensityFuncAsFirst) {
@@ -310,7 +313,6 @@ private:
     func2->setParameter("Width", 10.0);
     func2->setParameter("Intensity", 3.0);
 
-    using Mantid::CurveFitting::ComptonScatteringCountRate;
     auto profile = boost::make_shared<ComptonScatteringCountRate>();
     profile->initialize();
     profile->addFunction(func1);
@@ -321,7 +323,6 @@ private:
   }
 
   Mantid::API::IFunction_sptr createFunction() {
-    using Mantid::CurveFitting::ComptonScatteringCountRate;
 
     auto profile = boost::make_shared<ComptonScatteringCountRate>();
     profile->initialize();
diff --git a/Framework/CurveFitting/test/ConvolutionTest.h b/Framework/CurveFitting/test/Functions/ConvolutionTest.h
similarity index 98%
rename from Framework/CurveFitting/test/ConvolutionTest.h
rename to Framework/CurveFitting/test/Functions/ConvolutionTest.h
index 222e87689568f9c6e3885b24b2b446fcb3c727d6..21c97b9b390e28361bbb123333158d45c82abf6d 100644
--- a/Framework/CurveFitting/test/ConvolutionTest.h
+++ b/Framework/CurveFitting/test/Functions/ConvolutionTest.h
@@ -5,8 +5,8 @@
 
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidAPI/AnalysisDataService.h"
-#include "MantidCurveFitting/Convolution.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/IPeakFunction.h"
@@ -21,6 +21,8 @@ using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 
 typedef Mantid::DataObjects::Workspace2D_sptr WS_type;
 typedef Mantid::DataObjects::TableWorkspace_sptr TWS_type;
@@ -406,7 +408,7 @@ public:
     conv->setParameter("f1.h", 1);
     conv->setParameter("f1.w", 1);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
 
     fit.setPropertyValue("Function", conv->asString());
@@ -424,7 +426,7 @@ public:
         0.1, fabs(out->getParameter("f1.w") - conv->getParameter("f1.w")));
 
     conv->setAttributeValue("FixResolution", false);
-    Fit fit1;
+    Algorithms::Fit fit1;
     fit1.initialize();
     fit1.setProperty("Function", boost::dynamic_pointer_cast<IFunction>(conv));
     fit1.setProperty("InputWorkspace", data);
diff --git a/Framework/CurveFitting/test/CubicSplineTest.h b/Framework/CurveFitting/test/Functions/CubicSplineTest.h
similarity index 97%
rename from Framework/CurveFitting/test/CubicSplineTest.h
rename to Framework/CurveFitting/test/Functions/CubicSplineTest.h
index f9a21e89591d04d0afa1c2943e88446a098a47e0..f90d200345fe5ffece9b81c38ba57583f84135e9 100644
--- a/Framework/CurveFitting/test/CubicSplineTest.h
+++ b/Framework/CurveFitting/test/Functions/CubicSplineTest.h
@@ -5,8 +5,8 @@
 #include <cmath>
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/CubicSpline.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/CubicSpline.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
@@ -16,6 +16,8 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 
 class CubicSplineTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/DeltaFunctionTest.h b/Framework/CurveFitting/test/Functions/DeltaFunctionTest.h
similarity index 93%
rename from Framework/CurveFitting/test/DeltaFunctionTest.h
rename to Framework/CurveFitting/test/Functions/DeltaFunctionTest.h
index d6ff22def118eb83ee4bd09828903e1cc5e7ebf6..b7fabe94be69f939f9593a29ee64bf745353847f 100644
--- a/Framework/CurveFitting/test/DeltaFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/DeltaFunctionTest.h
@@ -2,10 +2,10 @@
 #define DELTAFUNCTIONTEST_H
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
-#include "MantidCurveFitting/DeltaFunction.h"
-#include "MantidCurveFitting/Convolution.h"
+#include "MantidCurveFitting/Functions/DeltaFunction.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
 
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -13,6 +13,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 
 // same class as ConvolutionTest_Gauss in ConvolutionTest.h
 class DeltaFunctionTest_Gauss : public IPeakFunction {
diff --git a/Framework/CurveFitting/test/DiffRotDiscreteCircleTest.h b/Framework/CurveFitting/test/Functions/DiffRotDiscreteCircleTest.h
similarity index 94%
rename from Framework/CurveFitting/test/DiffRotDiscreteCircleTest.h
rename to Framework/CurveFitting/test/Functions/DiffRotDiscreteCircleTest.h
index b6ffb6e4c0ff751c700ef445c3a6cb72a15f52d6..4b8df7d7a42592fafb9a381ecd27f535e01e3fdb 100644
--- a/Framework/CurveFitting/test/DiffRotDiscreteCircleTest.h
+++ b/Framework/CurveFitting/test/Functions/DiffRotDiscreteCircleTest.h
@@ -3,10 +3,10 @@
 
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/AlgorithmFactory.h"
-#include "MantidCurveFitting/Convolution.h"
-#include "MantidCurveFitting/DiffRotDiscreteCircle.h"
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
+#include "MantidCurveFitting/Functions/DiffRotDiscreteCircle.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidGeometry/Instrument/ReferenceFrame.h"
 #include "MantidTestHelpers/ComponentCreationHelper.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
@@ -18,6 +18,10 @@
 #include <boost/random/uniform_real.hpp>
 #include <boost/shared_ptr.hpp>
 
+using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
+
 class DiffRotDiscreteCircleTest : public CxxTest::TestSuite {
 
 public:
@@ -34,8 +38,7 @@ public:
     const double w0 = random_value(-1.0, 1.0);
     const double h = random_value(1.0, 1000.0);
     const double fwhm = random_value(1.0, 100.0);
-    boost::shared_ptr<Mantid::CurveFitting::Gaussian> resolution(
-        new Mantid::CurveFitting::Gaussian());
+    boost::shared_ptr<Gaussian> resolution(new Gaussian());
     resolution->initialize(); // declare parameters
     resolution->setCentre(w0);
     resolution->setHeight(h);
@@ -47,16 +50,15 @@ public:
     const double r = random_value(0.3, 9.8);
     const double Q = 0.9;
     const int N = 6;
-    boost::shared_ptr<Mantid::CurveFitting::ElasticDiffRotDiscreteCircle>
-        structure_factor(
-            new Mantid::CurveFitting::ElasticDiffRotDiscreteCircle());
+    boost::shared_ptr<ElasticDiffRotDiscreteCircle> structure_factor(
+        new ElasticDiffRotDiscreteCircle());
     structure_factor->setParameter("Height", I);
     structure_factor->setParameter("Radius", r);
     structure_factor->setAttributeValue("Q", Q);
     structure_factor->setAttributeValue("N", N);
 
     // initialize the convolution function
-    Mantid::CurveFitting::Convolution conv;
+    Convolution conv;
     conv.addFunction(resolution);
     conv.addFunction(structure_factor);
 
@@ -124,7 +126,7 @@ public:
                                  "9,Intensity=2.9,Radius=2.3,Decay=0.468";
 
     // Do a fit with no iterations
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     fitalg.setProperty("Function", funtion_string);
@@ -172,7 +174,7 @@ public:
     const double tao = 0.45;
     const double Q = 0.7;
     const int N = 4;
-    Mantid::CurveFitting::DiffRotDiscreteCircle func;
+    DiffRotDiscreteCircle func;
     func.init();
     func.setParameter("f1.Intensity", I);
     func.setParameter("f1.Radius", R);
@@ -181,8 +183,7 @@ public:
     func.setAttributeValue("N", N);
 
     // check values where correctly initialized
-    auto ids = boost::dynamic_pointer_cast<
-        Mantid::CurveFitting::InelasticDiffRotDiscreteCircle>(
+    auto ids = boost::dynamic_pointer_cast<InelasticDiffRotDiscreteCircle>(
         func.getFunction(1));
     TS_ASSERT_EQUALS(ids->getParameter("Intensity"), I);
     TS_ASSERT_EQUALS(ids->getParameter("Radius"), R);
@@ -192,8 +193,7 @@ public:
 
     // check the ties were applied correctly
     func.applyTies(); // elastic parameters are tied to inelastic parameters
-    auto eds = boost::dynamic_pointer_cast<
-        Mantid::CurveFitting::ElasticDiffRotDiscreteCircle>(
+    auto eds = boost::dynamic_pointer_cast<ElasticDiffRotDiscreteCircle>(
         func.getFunction(0));
     TS_ASSERT_EQUALS(eds->getParameter("Height"), I);
     TS_ASSERT_EQUALS(eds->getParameter("Radius"), R);
@@ -207,15 +207,14 @@ public:
     const double tao = 0.45;
 
     // This should set parameters of the inelastic part
-    Mantid::CurveFitting::DiffRotDiscreteCircle func;
+    DiffRotDiscreteCircle func;
     func.init();
     func.setParameter("Intensity", I);
     func.setParameter("Radius", R);
     func.setParameter("Decay", tao);
 
     // check the parameter of the inelastic part
-    auto ifunc = boost::dynamic_pointer_cast<
-        Mantid::CurveFitting::InelasticDiffRotDiscreteCircle>(
+    auto ifunc = boost::dynamic_pointer_cast<InelasticDiffRotDiscreteCircle>(
         func.getFunction(1));
     TS_ASSERT_EQUALS(ifunc->getParameter("Intensity"), I);
     TS_ASSERT_EQUALS(ifunc->getParameter("Radius"), R);
@@ -223,8 +222,7 @@ public:
 
     // check the parameters of the elastic part
     func.applyTies(); // elastic parameters are tied to inelastic parameters
-    auto efunc = boost::dynamic_pointer_cast<
-        Mantid::CurveFitting::ElasticDiffRotDiscreteCircle>(
+    auto efunc = boost::dynamic_pointer_cast<ElasticDiffRotDiscreteCircle>(
         func.getFunction(0));
     TS_ASSERT_EQUALS(efunc->getParameter("Height"), I);
     TS_ASSERT_EQUALS(efunc->getParameter("Radius"), R);
@@ -244,7 +242,7 @@ public:
         "Radius=1.567,Decay=7.567))";
 
     // Initialize the fit function in the Fit algorithm
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     fitalg.setProperty("Function", funtion_string);
@@ -277,8 +275,7 @@ public:
     Mantid::API::IFunction_sptr fitalg_function =
         fitalg.getProperty("Function");
     auto fitalg_conv =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::Convolution>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<Convolution>(fitalg_function);
     Mantid::API::IFunction_sptr fitalg_resolution = fitalg_conv->getFunction(0);
     TS_ASSERT_DELTA(fitalg_resolution->getParameter("PeakCentre"), 0.0,
                     0.00001); // allow for a small percent variation
@@ -342,7 +339,7 @@ private:
         << ",Shift=" << S << ")";
 
     // Initialize the fit function in the Fit algorithm
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     fitalg.setProperty("Function", function_stream.str());
@@ -384,8 +381,7 @@ private:
     Mantid::API::IFunction_sptr fitalg_function =
         fitalg.getProperty("Function");
     auto fitalg_conv =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::Convolution>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<Convolution>(fitalg_function);
     Mantid::API::IFunction_sptr fitalg_resolution = fitalg_conv->getFunction(0);
     TS_ASSERT_DELTA(fitalg_resolution->getParameter("PeakCentre"), 0.0,
                     0.00001); // allow for a small percent variation
@@ -525,7 +521,7 @@ private:
 
   // create a data workspace using a Fit algorithm
   Mantid::DataObjects::Workspace2D_sptr
-  generateWorkspaceFromFitAlgorithm(Mantid::CurveFitting::Fit &fitalg) {
+  generateWorkspaceFromFitAlgorithm(Algorithms::Fit &fitalg) {
     using namespace Mantid::Kernel;
     using namespace Mantid::Geometry;
 
diff --git a/Framework/CurveFitting/test/DiffSphereTest.h b/Framework/CurveFitting/test/Functions/DiffSphereTest.h
similarity index 94%
rename from Framework/CurveFitting/test/DiffSphereTest.h
rename to Framework/CurveFitting/test/Functions/DiffSphereTest.h
index 17d2e95afd9b115fcab90a1a311baa33d63013ab..06807332917f92d65dcc128bff337207ef34e7fa 100644
--- a/Framework/CurveFitting/test/DiffSphereTest.h
+++ b/Framework/CurveFitting/test/Functions/DiffSphereTest.h
@@ -10,17 +10,21 @@
 // Include local copy of Valgrind header to avoid creating a dependency
 #include "valgrind.h"
 
-#include "MantidCurveFitting/DiffSphere.h"
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Convolution.h"
+#include "MantidCurveFitting/Functions/DiffSphere.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/AlgorithmFactory.h"
 
 #include "MantidGeometry/Instrument/ReferenceFrame.h"
 #include "MantidTestHelpers/ComponentCreationHelper.h"
 
+using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
+
 class DiffSphereTest : public CxxTest::TestSuite {
 public:
   bool skipTests() {
@@ -42,7 +46,7 @@ public:
         "Sigma=0.002);name=ElasticDiffSphere,Q=0.5,Height=47.014,Radius=3.567)";
 
     // Initialize the fit function in the Fit algorithm
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     fitalg.setProperty("Function", funtion_string);
@@ -82,8 +86,7 @@ public:
     Mantid::API::IFunction_sptr fitalg_function =
         fitalg.getProperty("Function");
     auto fitalg_conv =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::Convolution>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<Convolution>(fitalg_function);
     Mantid::API::IFunction_sptr fitalg_resolution = fitalg_conv->getFunction(0);
     TS_ASSERT_DELTA(fitalg_resolution->getParameter("PeakCentre"), 0.0,
                     0.00001); // allow for a small percent variation
@@ -132,16 +135,15 @@ public:
                              // of the 99 coefficients to break down
 
     // initialize the elastic part
-    boost::shared_ptr<Mantid::CurveFitting::ElasticDiffSphere> elastic_part(
-        new Mantid::CurveFitting::ElasticDiffSphere());
+    boost::shared_ptr<ElasticDiffSphere> elastic_part(new ElasticDiffSphere());
     elastic_part->setParameter("Height", I);
     elastic_part->setParameter("Radius", R);
     elastic_part->setAttributeValue("Q", Q);
     elastic_part->init();
 
     // initialize the inelastic part
-    boost::shared_ptr<Mantid::CurveFitting::InelasticDiffSphere> inelastic_part(
-        new Mantid::CurveFitting::InelasticDiffSphere());
+    boost::shared_ptr<InelasticDiffSphere> inelastic_part(
+        new InelasticDiffSphere());
     inelastic_part->setParameter("Intensity", I);
     inelastic_part->setParameter("Radius", R);
     inelastic_part->setParameter("Diffusion", D);
@@ -185,7 +187,7 @@ public:
     const double Q(0.5);
 
     // Initialize the fit function in the Fit algorithm
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     std::ostringstream funtion_stream;
@@ -205,18 +207,15 @@ public:
     Mantid::API::IFunction_sptr fitalg_function =
         fitalg.getProperty("Function"); // main function
     fitalg_function->initialize();
-    auto fitalg_conv =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::Convolution>(
-            fitalg_function);                      // cast to Convolution
+    auto fitalg_conv = boost::dynamic_pointer_cast<Convolution>(
+        fitalg_function);                          // cast to Convolution
     fitalg_function = fitalg_conv->getFunction(1); // DiffSphere
     auto fitalg_structure_factor =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::DiffSphere>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<DiffSphere>(fitalg_function);
 
     fitalg_function = fitalg_structure_factor->getFunction(0);
     auto fitalg_elastic =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::ElasticDiffSphere>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<ElasticDiffSphere>(fitalg_function);
     TS_ASSERT_DELTA(fitalg_elastic->getParameter("Height"), I_0,
                     std::numeric_limits<double>::epsilon());
     TS_ASSERT_DELTA(fitalg_elastic->getParameter("Radius"), R_0,
@@ -229,8 +228,7 @@ public:
 
     fitalg_function = fitalg_structure_factor->getFunction(1);
     auto fitalg_inelastic =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::InelasticDiffSphere>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<InelasticDiffSphere>(fitalg_function);
     TS_ASSERT_DELTA(fitalg_inelastic->getParameter("Intensity"), I_0,
                     std::numeric_limits<double>::epsilon());
     TS_ASSERT_DELTA(fitalg_inelastic->getParameter("Radius"), R_0,
@@ -331,7 +329,7 @@ private:
       simQ = 0.20092;
 
     // Initialize the fit function in the Fit algorithm
-    Mantid::CurveFitting::Fit fitalg;
+    Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
     std::ostringstream funtion_stream;
@@ -398,8 +396,7 @@ private:
     Mantid::API::IFunction_sptr fitalg_function =
         fitalg.getProperty("Function");
     auto fitalg_conv =
-        boost::dynamic_pointer_cast<Mantid::CurveFitting::Convolution>(
-            fitalg_function);
+        boost::dynamic_pointer_cast<Convolution>(fitalg_function);
     Mantid::API::IFunction_sptr fitalg_resolution = fitalg_conv->getFunction(0);
 
     TS_ASSERT_DELTA(fitalg_resolution->getParameter("PeakCentre"), S,
@@ -457,7 +454,7 @@ private:
 
   // create a data workspace using a Fit algorithm
   Mantid::DataObjects::Workspace2D_sptr
-  generateWorkspaceFromFitAlgorithm(Mantid::CurveFitting::Fit &fitalg) {
+  generateWorkspaceFromFitAlgorithm(Algorithms::Fit &fitalg) {
     using namespace Mantid::Kernel;
     using namespace Mantid::Geometry;
 
diff --git a/Framework/CurveFitting/test/DynamicKuboToyabeTest.h b/Framework/CurveFitting/test/Functions/DynamicKuboToyabeTest.h
similarity index 95%
rename from Framework/CurveFitting/test/DynamicKuboToyabeTest.h
rename to Framework/CurveFitting/test/Functions/DynamicKuboToyabeTest.h
index cb987b5fc70802662484bb4c949f927c2b696a77..dd533ab427dc806cd9709c3986360e37ded82496 100644
--- a/Framework/CurveFitting/test/DynamicKuboToyabeTest.h
+++ b/Framework/CurveFitting/test/Functions/DynamicKuboToyabeTest.h
@@ -3,14 +3,15 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/DynamicKuboToyabe.h"
-#include "MantidCurveFitting/StaticKuboToyabe.h"
+#include "MantidCurveFitting/Functions/DynamicKuboToyabe.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabe.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 
 class DynamicKuboToyabeTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/EndErfcTest.h b/Framework/CurveFitting/test/Functions/EndErfcTest.h
similarity index 92%
rename from Framework/CurveFitting/test/EndErfcTest.h
rename to Framework/CurveFitting/test/Functions/EndErfcTest.h
index 8e2ba2f3485752e855f833486be3d5dc079979b5..dc03dd49687bc3504fa6fede22461e39bd487145 100644
--- a/Framework/CurveFitting/test/EndErfcTest.h
+++ b/Framework/CurveFitting/test/Functions/EndErfcTest.h
@@ -3,11 +3,8 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/EndErfc.h"
-#include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/EndErfc.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -16,6 +13,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class EndErfcTest : public CxxTest::TestSuite {
@@ -41,7 +40,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/ExpDecayMuonTest.h b/Framework/CurveFitting/test/Functions/ExpDecayMuonTest.h
similarity index 89%
rename from Framework/CurveFitting/test/ExpDecayMuonTest.h
rename to Framework/CurveFitting/test/Functions/ExpDecayMuonTest.h
index bf17e5d9a7728820700c5cccac72a17cf1b66225..02a079776da1b8fc1632ca1ddc4e09cd632bcaff 100644
--- a/Framework/CurveFitting/test/ExpDecayMuonTest.h
+++ b/Framework/CurveFitting/test/Functions/ExpDecayMuonTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ExpDecayMuon.h"
+#include "MantidCurveFitting/Functions/ExpDecayMuon.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -16,6 +16,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 
 class ExpDecayMuonTest : public CxxTest::TestSuite {
@@ -48,7 +50,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/ExpDecayOscTest.h b/Framework/CurveFitting/test/Functions/ExpDecayOscTest.h
similarity index 90%
rename from Framework/CurveFitting/test/ExpDecayOscTest.h
rename to Framework/CurveFitting/test/Functions/ExpDecayOscTest.h
index 865c28d2c1c9811aae3c25d04b01e35ed13e8975..9c91b5e7dccd6734f9deb754062e9da48fcc81a9 100644
--- a/Framework/CurveFitting/test/ExpDecayOscTest.h
+++ b/Framework/CurveFitting/test/Functions/ExpDecayOscTest.h
@@ -4,9 +4,9 @@
 #include <cxxtest/TestSuite.h>
 #include <cmath>
 
-#include "MantidCurveFitting/ExpDecayOsc.h"
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Functions/ExpDecayOsc.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -14,6 +14,9 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Constraints;
 using namespace Mantid::DataObjects;
 
 class ExpDecayOscTest : public CxxTest::TestSuite {
@@ -48,7 +51,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/ExpDecayTest.h b/Framework/CurveFitting/test/Functions/ExpDecayTest.h
similarity index 90%
rename from Framework/CurveFitting/test/ExpDecayTest.h
rename to Framework/CurveFitting/test/Functions/ExpDecayTest.h
index fbfa2c5a556b69117e0bf3163c16e4b3285a5738..149edd05e1a5ba33f31244e8764be4b53a4c5692 100644
--- a/Framework/CurveFitting/test/ExpDecayTest.h
+++ b/Framework/CurveFitting/test/Functions/ExpDecayTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ExpDecay.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +19,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 
 class ExpDecayTest : public CxxTest::TestSuite {
@@ -51,7 +53,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/FlatBackgroundTest.h b/Framework/CurveFitting/test/Functions/FlatBackgroundTest.h
similarity index 92%
rename from Framework/CurveFitting/test/FlatBackgroundTest.h
rename to Framework/CurveFitting/test/Functions/FlatBackgroundTest.h
index bc0dd6bbe920f081dfd366d54a2a61c04448c220..821dfed7a8478416ac589cca32e44d24e2e87dba 100644
--- a/Framework/CurveFitting/test/FlatBackgroundTest.h
+++ b/Framework/CurveFitting/test/Functions/FlatBackgroundTest.h
@@ -5,10 +5,11 @@
 #include "MantidKernel/Timer.h"
 #include "MantidKernel/System.h"
 
-#include "MantidCurveFitting/FlatBackground.h"
+#include "MantidCurveFitting/Functions/FlatBackground.h"
 
 using namespace Mantid;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class FlatBackgroundTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/FullprofPolynomialTest.h b/Framework/CurveFitting/test/Functions/FullprofPolynomialTest.h
similarity index 92%
rename from Framework/CurveFitting/test/FullprofPolynomialTest.h
rename to Framework/CurveFitting/test/Functions/FullprofPolynomialTest.h
index 2ecf9c6d841e358fb2ebab5aaf284bcc245302e2..42b9226a157d35194382d641ca202f57561deb76 100644
--- a/Framework/CurveFitting/test/FullprofPolynomialTest.h
+++ b/Framework/CurveFitting/test/Functions/FullprofPolynomialTest.h
@@ -3,17 +3,19 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/FullprofPolynomial.h"
+#include "MantidCurveFitting/Functions/FullprofPolynomial.h"
 #include "MantidAPI/IFunction.h"
 #include "MantidAPI/WorkspaceFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 
-using Mantid::CurveFitting::FullprofPolynomial;
+using Mantid::CurveFitting::Functions::FullprofPolynomial;
 
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Algorithms;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 using namespace Mantid::Kernel;
 
@@ -87,7 +89,7 @@ public:
     tofbkgd->setParameter("A3", 0.0);
 
     // Set up fit
-    CurveFitting::Fit fitalg;
+    CurveFitting::Algorithms::Fit fitalg;
     TS_ASSERT_THROWS_NOTHING(fitalg.initialize());
     TS_ASSERT(fitalg.isInitialized());
 
diff --git a/Framework/CurveFitting/test/GausDecayTest.h b/Framework/CurveFitting/test/Functions/GausDecayTest.h
similarity index 90%
rename from Framework/CurveFitting/test/GausDecayTest.h
rename to Framework/CurveFitting/test/Functions/GausDecayTest.h
index d3a087a5a047ce48be4856fa3eb57ce798df056f..3771d22c694d4c4438d2c3681fb7435e5dc634ac 100644
--- a/Framework/CurveFitting/test/GausDecayTest.h
+++ b/Framework/CurveFitting/test/Functions/GausDecayTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/GausDecay.h"
+#include "MantidCurveFitting/Functions/GausDecay.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -21,6 +21,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 using namespace Mantid::DataHandling;
 
@@ -52,7 +54,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/GausOscTest.h b/Framework/CurveFitting/test/Functions/GausOscTest.h
similarity index 91%
rename from Framework/CurveFitting/test/GausOscTest.h
rename to Framework/CurveFitting/test/Functions/GausOscTest.h
index 434cf9ba475c4eb988b4c6239aeedc90c829b9b3..0e31dc9c702bb0f9a5499f3a7ffcceaf22dd8d86 100644
--- a/Framework/CurveFitting/test/GausOscTest.h
+++ b/Framework/CurveFitting/test/Functions/GausOscTest.h
@@ -4,11 +4,11 @@
 #include <cxxtest/TestSuite.h>
 #include <cmath>
 
-#include "MantidCurveFitting/GausOsc.h"
+#include "MantidCurveFitting/Functions/GausOsc.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -22,6 +22,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 using namespace Mantid::DataHandling;
 
@@ -57,7 +59,7 @@ public:
   void testAgainstMockData() // Parts of test disabled because it does not give
                              // result like that obtained in mantidplot.
   {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/GaussianComptonProfileTest.h b/Framework/CurveFitting/test/Functions/GaussianComptonProfileTest.h
similarity index 94%
rename from Framework/CurveFitting/test/GaussianComptonProfileTest.h
rename to Framework/CurveFitting/test/Functions/GaussianComptonProfileTest.h
index 546dd4a9de2cb7c9d032fbff41062962064a02c6..dfec3f0af151f71660962a523f453ec815eb1a96 100644
--- a/Framework/CurveFitting/test/GaussianComptonProfileTest.h
+++ b/Framework/CurveFitting/test/Functions/GaussianComptonProfileTest.h
@@ -2,12 +2,13 @@
 #define MANTID_CURVEFITTING_GAUSSIANCOMPTONPROFILETEST_H_
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/GaussianComptonProfile.h"
+#include "MantidCurveFitting/Functions/GaussianComptonProfile.h"
 
 #include "MantidAPI/FunctionDomain1D.h"
 #include "ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::GaussianComptonProfile;
+using Mantid::CurveFitting::Functions::GaussianComptonProfile;
+using Mantid::CurveFitting::Functions::ComptonProfile;
 
 class GaussianComptonProfileTest : public CxxTest::TestSuite {
 public:
@@ -40,8 +41,7 @@ public:
   }
 
   void test_Function_Has_One_Intensity_Coefficient() {
-    boost::shared_ptr<Mantid::CurveFitting::ComptonProfile> profile =
-        createFunction();
+    boost::shared_ptr<ComptonProfile> profile = createFunction();
 
     auto intensityIndices = profile->intensityParameterIndices();
     TS_ASSERT_EQUALS(1, intensityIndices.size());
diff --git a/Framework/CurveFitting/test/GaussianTest.h b/Framework/CurveFitting/test/Functions/GaussianTest.h
similarity index 95%
rename from Framework/CurveFitting/test/GaussianTest.h
rename to Framework/CurveFitting/test/Functions/GaussianTest.h
index 91492c50f5ab2aa2bd0da295408e010fec8d0561..079292914546c5b19922438bcc98aab4ab79b476 100644
--- a/Framework/CurveFitting/test/GaussianTest.h
+++ b/Framework/CurveFitting/test/Functions/GaussianTest.h
@@ -3,11 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/InstrumentDataService.h"
@@ -23,14 +22,19 @@
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/UserFunction.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
 
 using namespace Mantid;
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Constraints;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 using namespace Mantid::DataHandling;
 
@@ -201,7 +205,7 @@ public:
     costFun->setFittingFunction(fnWithBk, domain, values);
     // TS_ASSERT_EQUALS(costFun->nParams(),3);
 
-    LevenbergMarquardtMDMinimizer s;
+    FuncMinimisers::LevenbergMarquardtMDMinimizer s;
     s.initialize(costFun);
     TS_ASSERT(s.minimize());
 
@@ -236,7 +240,7 @@ public:
     TS_ASSERT_THROWS_NOTHING(AnalysisDataService::Instance().add(wsName, ws2D));
 
     // Initialise algorithm
-    Fit alg;
+    Algorithms::Fit alg;
     TS_ASSERT_THROWS_NOTHING(alg.initialize());
     TS_ASSERT(alg.isInitialized());
 
@@ -305,7 +309,7 @@ public:
     Mantid::MantidVec &e = ws2D->dataE(0); // error values of counts
     getMockData(y, e);
 
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
@@ -358,7 +362,7 @@ public:
     // put this workspace in the data service
     TS_ASSERT_THROWS_NOTHING(AnalysisDataService::Instance().add(wsName, ws2D));
 
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
@@ -424,7 +428,7 @@ public:
         ConfigService::Instance().getString("curvefitting.peakRadius");
     ConfigService::Instance().setString("curvefitting.peakRadius", "5");
 
-    Fit alg;
+    Algorithms::Fit alg;
     TS_ASSERT_THROWS_NOTHING(alg.initialize());
     TS_ASSERT(alg.isInitialized());
 
diff --git a/Framework/CurveFitting/test/GramCharlierComptonProfileTest.h b/Framework/CurveFitting/test/Functions/GramCharlierComptonProfileTest.h
similarity index 94%
rename from Framework/CurveFitting/test/GramCharlierComptonProfileTest.h
rename to Framework/CurveFitting/test/Functions/GramCharlierComptonProfileTest.h
index 8220bfd74ed2e60ec30d4ada2ee6b3282141622a..905278a19172c6d03ee6b237f972058c2da5d16a 100644
--- a/Framework/CurveFitting/test/GramCharlierComptonProfileTest.h
+++ b/Framework/CurveFitting/test/Functions/GramCharlierComptonProfileTest.h
@@ -2,11 +2,12 @@
 #define MANTID_CURVEFITTING_GRAMCHARLIERCOMPTONPROFILETEST_H_
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/GramCharlierComptonProfile.h"
+#include "MantidCurveFitting/Functions/GramCharlierComptonProfile.h"
 
 #include "ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::GramCharlierComptonProfile;
+using Mantid::CurveFitting::Functions::ComptonProfile;
+using Mantid::CurveFitting::Functions::GramCharlierComptonProfile;
 
 class GramCharlierComptonProfileTest : public CxxTest::TestSuite {
 public:
@@ -58,8 +59,7 @@ public:
 
   void
   test_Function_Returns_Same_Number_Intensity_Coefficents_As_Active_Hermite_Coefficients_If_KFSE_Is_Fixed() {
-    boost::shared_ptr<Mantid::CurveFitting::ComptonProfile> profile =
-        createFunction();
+    boost::shared_ptr<ComptonProfile> profile = createFunction();
     profile->setAttributeValue("HermiteCoeffs", "1 0 1"); // turn on C_0 & C_4
     profile->fix(profile->parameterIndex("FSECoeff"));
 
@@ -69,8 +69,7 @@ public:
 
   void
   test_Function_Returns_Same_Number_Intensity_Coefficents_As_Active_Hermite_Coefficients_Plus_One_If_KFSE_Is_Free() {
-    boost::shared_ptr<Mantid::CurveFitting::ComptonProfile> profile =
-        createFunction();
+    boost::shared_ptr<ComptonProfile> profile = createFunction();
     profile->setAttributeValue("HermiteCoeffs", "1 0 1"); // turn on C_0 & C_4
 
     auto intensityIndices = profile->intensityParameterIndices();
diff --git a/Framework/CurveFitting/test/IkedaCarpenterPVTest.h b/Framework/CurveFitting/test/Functions/IkedaCarpenterPVTest.h
similarity index 96%
rename from Framework/CurveFitting/test/IkedaCarpenterPVTest.h
rename to Framework/CurveFitting/test/Functions/IkedaCarpenterPVTest.h
index 53cc7b2f7d9a362e1915efffd4cfeb308c8be2b9..df2182987c94074e520b9ee41fedffc68bff08f7 100644
--- a/Framework/CurveFitting/test/IkedaCarpenterPVTest.h
+++ b/Framework/CurveFitting/test/Functions/IkedaCarpenterPVTest.h
@@ -3,8 +3,8 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/IkedaCarpenterPV.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/IkedaCarpenterPV.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/ConfigService.h"
 
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
@@ -102,6 +102,7 @@ public:
   void testAgainstMockData() {
     using namespace Mantid::API;
     using namespace Mantid::CurveFitting;
+    using namespace Mantid::CurveFitting::Functions;
 
 /**
  * Changing compiler on OS X has yet again caused this (and only this) test to
@@ -172,6 +173,7 @@ public:
   void test_Against_Data_In_DeltaE() {
     using namespace Mantid::API;
     using namespace Mantid::CurveFitting;
+    using namespace Mantid::CurveFitting::Functions;
 
 #if !(defined __APPLE__)
 
@@ -253,6 +255,7 @@ private:
   Mantid::API::IAlgorithm_sptr runFit(const std::string &wsName) {
     using namespace Mantid::API;
     using namespace Mantid::CurveFitting;
+    using namespace Mantid::CurveFitting::Functions;
 
     // set up fitting function and pass to Fit
     IkedaCarpenterPV icpv;
@@ -265,7 +268,7 @@ private:
     icpv.tie("Kappa", "46.025921");
     icpv.setParameter("X0", 45.0);
 
-    auto alg = boost::shared_ptr<IAlgorithm>(new Fit);
+    auto alg = boost::shared_ptr<IAlgorithm>(new Algorithms::Fit);
     alg->initialize();
     alg->setPropertyValue("Function", icpv.asString());
     // Set general Fit parameters
diff --git a/Framework/CurveFitting/test/LinearBackgroundTest.h b/Framework/CurveFitting/test/Functions/LinearBackgroundTest.h
similarity index 92%
rename from Framework/CurveFitting/test/LinearBackgroundTest.h
rename to Framework/CurveFitting/test/Functions/LinearBackgroundTest.h
index f281f018e0533813b77359d129e0e5b63497cba0..03f2d8341c2adbb05608afa567f854141bc8298d 100644
--- a/Framework/CurveFitting/test/LinearBackgroundTest.h
+++ b/Framework/CurveFitting/test/Functions/LinearBackgroundTest.h
@@ -3,9 +3,9 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/LinearBackground.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
 
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -17,8 +17,8 @@
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
-using Mantid::CurveFitting::LinearBackground;
-using Mantid::CurveFitting::Fit;
+using Mantid::CurveFitting::Functions::LinearBackground;
+using Mantid::CurveFitting::Algorithms::Fit;
 using namespace Mantid::DataObjects;
 using namespace Mantid::DataHandling;
 
diff --git a/Framework/CurveFitting/test/LogNormalTest.h b/Framework/CurveFitting/test/Functions/LogNormalTest.h
similarity index 92%
rename from Framework/CurveFitting/test/LogNormalTest.h
rename to Framework/CurveFitting/test/Functions/LogNormalTest.h
index b6ca2231c59266dcc8b9538d6c5b43c1a7c7ca69..d4391f687f2020a2aab3d304feae0ad7e181ec74 100644
--- a/Framework/CurveFitting/test/LogNormalTest.h
+++ b/Framework/CurveFitting/test/Functions/LogNormalTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/LogNormal.h"
+#include "MantidCurveFitting/Functions/LogNormal.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +19,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class LogNormalTest : public CxxTest::TestSuite {
@@ -54,7 +56,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/Lorentzian1DTest.h b/Framework/CurveFitting/test/Functions/Lorentzian1DTest.h
similarity index 96%
rename from Framework/CurveFitting/test/Lorentzian1DTest.h
rename to Framework/CurveFitting/test/Functions/Lorentzian1DTest.h
index 10d4d940f1751a5491e9528d421f16d347c75714..d56d87abe45f2cf3e6dd7bb6b2719c5e6b4f8a67 100644
--- a/Framework/CurveFitting/test/Lorentzian1DTest.h
+++ b/Framework/CurveFitting/test/Functions/Lorentzian1DTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Lorentzian1D.h"
+#include "MantidCurveFitting/Functions/Lorentzian1D.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -12,7 +12,7 @@
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
-using Mantid::CurveFitting::Lorentzian1D;
+using Mantid::CurveFitting::Functions::Lorentzian1D;
 using namespace Mantid::DataObjects;
 
 class Lorentzian1DTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/LorentzianTest.h b/Framework/CurveFitting/test/Functions/LorentzianTest.h
similarity index 87%
rename from Framework/CurveFitting/test/LorentzianTest.h
rename to Framework/CurveFitting/test/Functions/LorentzianTest.h
index f4fa3ef83c727c495bf6ba4650de053a2a6859c3..50f9bc895d555bd215ed6dd191b9d617e2718612 100644
--- a/Framework/CurveFitting/test/LorentzianTest.h
+++ b/Framework/CurveFitting/test/Functions/LorentzianTest.h
@@ -3,12 +3,13 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Lorentzian.h"
+#include "MantidCurveFitting/Functions/Lorentzian.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 
 #include <boost/make_shared.hpp>
+using Mantid::CurveFitting::Functions::Lorentzian;
 
 class LorentzianTest : public CxxTest::TestSuite {
 public:
@@ -41,7 +42,7 @@ public:
   }
 
   void test_categories() {
-    Mantid::CurveFitting::Lorentzian forCat;
+    Lorentzian forCat;
     const std::vector<std::string> categories = forCat.categories();
     TS_ASSERT(categories.size() == 1);
     TS_ASSERT(categories[0] == "Peak");
@@ -49,7 +50,7 @@ public:
 
   void test_FWHM() {
     double hwhm = 0.5;
-    Mantid::CurveFitting::Lorentzian lor;
+    Lorentzian lor;
     lor.initialize();
     lor.setParameter("Amplitude", 1.0);
     lor.setParameter("PeakCentre", 0.0);
@@ -63,7 +64,7 @@ public:
   }
 
   void test_height() {
-    Mantid::CurveFitting::Lorentzian lor;
+    Lorentzian lor;
     lor.initialize();
     lor.setHeight(2.0);
     lor.setCentre(3.0);
@@ -78,7 +79,7 @@ public:
   }
 
   void test_height_zero_width() {
-    Mantid::CurveFitting::Lorentzian lor;
+    Lorentzian lor;
     lor.initialize();
     lor.setHeight(2.0);
     lor.setCentre(3.0);
@@ -96,7 +97,7 @@ public:
   }
 
   void testIntensity() {
-    Mantid::CurveFitting::Lorentzian lor;
+    Lorentzian lor;
     lor.initialize();
     lor.setHeight(2.0);
     lor.setCentre(3.0);
@@ -110,15 +111,15 @@ public:
   }
 
 private:
-  class TestableLorentzian : public Mantid::CurveFitting::Lorentzian {
+  class TestableLorentzian : public Lorentzian {
   public:
     void functionLocal(double *out, const double *xValues,
                        const size_t nData) const {
-      Mantid::CurveFitting::Lorentzian::functionLocal(out, xValues, nData);
+      Lorentzian::functionLocal(out, xValues, nData);
     }
     void functionDerivLocal(Mantid::API::Jacobian *out, const double *xValues,
                             const size_t nData) {
-      Mantid::CurveFitting::Lorentzian::functionDerivLocal(out, xValues, nData);
+      Lorentzian::functionDerivLocal(out, xValues, nData);
     }
   };
 
diff --git a/Framework/CurveFitting/test/MuonFInteractionTest.h b/Framework/CurveFitting/test/Functions/MuonFInteractionTest.h
similarity index 93%
rename from Framework/CurveFitting/test/MuonFInteractionTest.h
rename to Framework/CurveFitting/test/Functions/MuonFInteractionTest.h
index b9b5b3b7d968869e05b05e394344826c27ed76c4..a03d49a13135f5697a6f46e2ca9d2a8a2c067e89 100644
--- a/Framework/CurveFitting/test/MuonFInteractionTest.h
+++ b/Framework/CurveFitting/test/Functions/MuonFInteractionTest.h
@@ -3,11 +3,8 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/MuonFInteraction.h"
-#include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/MuonFInteraction.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +16,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class MuonFInteractionTest : public CxxTest::TestSuite {
@@ -54,7 +53,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/NeutronBk2BkExpConvPVoigtTest.h b/Framework/CurveFitting/test/Functions/NeutronBk2BkExpConvPVoigtTest.h
similarity index 99%
rename from Framework/CurveFitting/test/NeutronBk2BkExpConvPVoigtTest.h
rename to Framework/CurveFitting/test/Functions/NeutronBk2BkExpConvPVoigtTest.h
index 946ebe697dc0713f9887fa454ad16d3ad3f90294..ad44379ead2f7307b6fff1d56f2bda5df4561ac5 100644
--- a/Framework/CurveFitting/test/NeutronBk2BkExpConvPVoigtTest.h
+++ b/Framework/CurveFitting/test/Functions/NeutronBk2BkExpConvPVoigtTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/NeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/Functions/NeutronBk2BkExpConvPVoigt.h"
 
 using namespace std;
-using Mantid::CurveFitting::NeutronBk2BkExpConvPVoigt;
+using Mantid::CurveFitting::Functions::NeutronBk2BkExpConvPVoigt;
 
 class NeutronBk2BkExpConvPVoigtTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/PawleyFunctionTest.h b/Framework/CurveFitting/test/Functions/PawleyFunctionTest.h
similarity index 99%
rename from Framework/CurveFitting/test/PawleyFunctionTest.h
rename to Framework/CurveFitting/test/Functions/PawleyFunctionTest.h
index 141f4d008e4764a8fdbb892a25f23da0b1f51422..f746d52c86d2c82aa215978eafe8cb2ea0257b04 100644
--- a/Framework/CurveFitting/test/PawleyFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/PawleyFunctionTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PawleyFunction.h"
+#include "MantidCurveFitting/Functions/PawleyFunction.h"
 #include "MantidGeometry/Crystal/PointGroup.h"
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -11,6 +11,7 @@
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 using namespace Mantid::Geometry;
 using namespace Mantid::Kernel;
diff --git a/Framework/CurveFitting/test/PeakParameterFunctionTest.h b/Framework/CurveFitting/test/Functions/PeakParameterFunctionTest.h
similarity index 97%
rename from Framework/CurveFitting/test/PeakParameterFunctionTest.h
rename to Framework/CurveFitting/test/Functions/PeakParameterFunctionTest.h
index 4f5bb3317308e6f871d5c0f994b693b99be1c5d3..80cf00d80492ae098d07649a3cf5b8c882d8aca7 100644
--- a/Framework/CurveFitting/test/PeakParameterFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/PeakParameterFunctionTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PeakParameterFunction.h"
+#include "MantidCurveFitting/Functions/PeakParameterFunction.h"
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionFactory.h"
@@ -13,6 +13,7 @@
 #include "MantidCurveFitting/Jacobian.h"
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class PeakParameterFunctionTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/PolynomialTest.h b/Framework/CurveFitting/test/Functions/PolynomialTest.h
similarity index 92%
rename from Framework/CurveFitting/test/PolynomialTest.h
rename to Framework/CurveFitting/test/Functions/PolynomialTest.h
index c33a5e183567d675eb3ad72a41be6b0052334813..13d0461f676997d8bc7ccc44f69831644154cb02 100644
--- a/Framework/CurveFitting/test/PolynomialTest.h
+++ b/Framework/CurveFitting/test/Functions/PolynomialTest.h
@@ -3,15 +3,16 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Polynomial.h"
+#include "MantidCurveFitting/Functions/Polynomial.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidAPI/WorkspaceFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
-using Mantid::CurveFitting::Polynomial;
+using Mantid::CurveFitting::Functions::Polynomial;
 using namespace Mantid;
 using namespace API;
 using namespace Kernel;
+using namespace Mantid::CurveFitting::Algorithms;
 
 class PolynomialTest : public CxxTest::TestSuite {
 public:
@@ -45,7 +46,7 @@ public:
     // put this workspace in the data service
     TS_ASSERT_THROWS_NOTHING(AnalysisDataService::Instance().add(wsName, ws2D));
 
-    CurveFitting::Fit alg2;
+    CurveFitting::Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/ProcessBackgroundTest.h b/Framework/CurveFitting/test/Functions/ProcessBackgroundTest.h
similarity index 99%
rename from Framework/CurveFitting/test/ProcessBackgroundTest.h
rename to Framework/CurveFitting/test/Functions/ProcessBackgroundTest.h
index 393ef4b2ceb904fc8a169e8317b46abcf277693b..9ad20b34455b34d2f8d1d236501ce8af4c42ae4d 100644
--- a/Framework/CurveFitting/test/ProcessBackgroundTest.h
+++ b/Framework/CurveFitting/test/Functions/ProcessBackgroundTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ProcessBackground.h"
+#include "MantidCurveFitting/Functions/ProcessBackground.h"
 #include "MantidDataObjects/Workspace2D.h"
 #include "MantidDataObjects/TableWorkspace.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -11,7 +11,7 @@
 
 #include <fstream>
 
-using Mantid::CurveFitting::ProcessBackground;
+using Mantid::CurveFitting::Functions::ProcessBackground;
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Kernel;
diff --git a/Framework/CurveFitting/test/ProductFunctionTest.h b/Framework/CurveFitting/test/Functions/ProductFunctionTest.h
similarity index 94%
rename from Framework/CurveFitting/test/ProductFunctionTest.h
rename to Framework/CurveFitting/test/Functions/ProductFunctionTest.h
index 48cb11dc1fea7b8bde2140d39d630e177960b956..a34711c1d98af800f1f0c991ade79c0a39b44026 100644
--- a/Framework/CurveFitting/test/ProductFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/ProductFunctionTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ProductFunction.h"
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/Gaussian.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
 #include "MantidCurveFitting/Jacobian.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
 #include "MantidDataObjects/Workspace2D.h"
 
@@ -19,6 +19,9 @@
 #include "MantidAPI/FunctionValues.h"
 
 typedef Mantid::DataObjects::Workspace2D_sptr WS_type;
+using Mantid::CurveFitting::Functions::ProductFunction;
+using Mantid::CurveFitting::Functions::Gaussian;
+using Mantid::CurveFitting::Algorithms::Fit;
 
 class ProductFunctionMWTest_Gauss : public Mantid::API::IPeakFunction {
 public:
@@ -99,7 +102,7 @@ DECLARE_FUNCTION(ProductFunctionMWTest_Linear)
 class ProductFunctionTest : public CxxTest::TestSuite {
 public:
   void testFunction() {
-    Mantid::CurveFitting::ProductFunction prodF;
+    ProductFunction prodF;
 
     Mantid::API::IFunction_sptr gauss1(new ProductFunctionMWTest_Gauss);
     gauss1->setParameter(0, 1.1);
@@ -154,8 +157,7 @@ public:
             prodF.asString());
     TS_ASSERT(fun);
 
-    Mantid::CurveFitting::ProductFunction *prodF1 =
-        dynamic_cast<Mantid::CurveFitting::ProductFunction *>(fun.get());
+    ProductFunction *prodF1 = dynamic_cast<ProductFunction *>(fun.get());
     TS_ASSERT(prodF1);
 
     TS_ASSERT_EQUALS(prodF1->nFunctions(), 4);
@@ -182,12 +184,12 @@ public:
   }
 
   void testProductFunction() {
-    Mantid::CurveFitting::ProductFunction prodF;
+    ProductFunction prodF;
 
     double c1 = 1.0;
     double h1 = 3.0;
     double s1 = 0.5;
-    Mantid::API::IFunction_sptr f0(new Mantid::CurveFitting::Gaussian);
+    Mantid::API::IFunction_sptr f0(new Gaussian);
     f0->initialize();
     f0->setParameter("PeakCentre", c1);
     f0->setParameter("Height", h1);
@@ -208,7 +210,7 @@ public:
     double c2 = 2;
     double h2 = 10.0;
     double s2 = 0.5;
-    Mantid::API::IFunction_sptr f1(new Mantid::CurveFitting::Gaussian);
+    Mantid::API::IFunction_sptr f1(new Gaussian);
     f1->initialize();
     f1->setParameter("PeakCentre", c2);
     f1->setParameter("Height", h2);
@@ -249,7 +251,7 @@ public:
 
     Mantid::API::AnalysisDataService::Instance().add(wsName, ws);
 
-    Mantid::CurveFitting::Fit fit;
+    Mantid::CurveFitting::Algorithms::Fit fit;
     fit.initialize();
 
     f0->tie("PeakCentre", "1.0");
@@ -284,14 +286,14 @@ public:
   }
 
   void testForCategories() {
-    Mantid::CurveFitting::ProductFunction forCat;
+    ProductFunction forCat;
     const std::vector<std::string> categories = forCat.categories();
     TS_ASSERT(categories.size() == 1);
     TS_ASSERT(categories[0] == "General");
   }
 
   void testDerivatives() {
-    Mantid::CurveFitting::ProductFunction prodF;
+    ProductFunction prodF;
 
     Mantid::API::IFunction_sptr linear1(new ProductFunctionMWTest_Linear);
     linear1->setParameter(0, 1.0);
diff --git a/Framework/CurveFitting/test/ProductLinearExpTest.h b/Framework/CurveFitting/test/Functions/ProductLinearExpTest.h
similarity index 96%
rename from Framework/CurveFitting/test/ProductLinearExpTest.h
rename to Framework/CurveFitting/test/Functions/ProductLinearExpTest.h
index 99cb313f5f6ebbfd17f9a148b1d9250e945652fc..a198b826c7ae86af588c6f966874bde85024b175 100644
--- a/Framework/CurveFitting/test/ProductLinearExpTest.h
+++ b/Framework/CurveFitting/test/Functions/ProductLinearExpTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ProductLinearExp.h"
-#include "MantidCurveFitting/ExpDecay.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/ProductFunction.h"
+#include "MantidCurveFitting/Functions/ProductLinearExp.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -16,6 +16,7 @@
 #include <boost/make_shared.hpp>
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class ProductLinearExpTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/ProductQuadraticExpTest.h b/Framework/CurveFitting/test/Functions/ProductQuadraticExpTest.h
similarity index 96%
rename from Framework/CurveFitting/test/ProductQuadraticExpTest.h
rename to Framework/CurveFitting/test/Functions/ProductQuadraticExpTest.h
index 51604e1a486f1b734ac181257475df8c162fdb91..c6c4385de3e644ddc19eb57c44e70fa1ed07c65a 100644
--- a/Framework/CurveFitting/test/ProductQuadraticExpTest.h
+++ b/Framework/CurveFitting/test/Functions/ProductQuadraticExpTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ProductQuadraticExp.h"
-#include "MantidCurveFitting/ExpDecay.h"
-#include "MantidCurveFitting/Quadratic.h"
-#include "MantidCurveFitting/ProductFunction.h"
+#include "MantidCurveFitting/Functions/ProductQuadraticExp.h"
+#include "MantidCurveFitting/Functions/ExpDecay.h"
+#include "MantidCurveFitting/Functions/Quadratic.h"
+#include "MantidCurveFitting/Functions/ProductFunction.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -16,6 +16,7 @@
 #include <boost/make_shared.hpp>
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class ProductQuadraticExpTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/PseudoVoigtTest.h b/Framework/CurveFitting/test/Functions/PseudoVoigtTest.h
similarity index 98%
rename from Framework/CurveFitting/test/PseudoVoigtTest.h
rename to Framework/CurveFitting/test/Functions/PseudoVoigtTest.h
index 53a4d256f16cf76d0714a5b84ee8f5d9f0c548ef..fd94bc3955f8d97674c3d4a57dc417ba80c34dab 100644
--- a/Framework/CurveFitting/test/PseudoVoigtTest.h
+++ b/Framework/CurveFitting/test/Functions/PseudoVoigtTest.h
@@ -3,13 +3,13 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/PseudoVoigt.h"
+#include "MantidCurveFitting/Functions/PseudoVoigt.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include <boost/make_shared.hpp>
 
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/Lorentzian.h"
+#include "MantidCurveFitting/Functions/Gaussian.h"
+#include "MantidCurveFitting/Functions/Lorentzian.h"
 #include "MantidAPI/AlgorithmManager.h"
 
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
@@ -17,6 +17,7 @@
 #include "MantidKernel/MersenneTwister.h"
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 using namespace Mantid::DataObjects;
 
diff --git a/Framework/CurveFitting/test/QuadraticTest.h b/Framework/CurveFitting/test/Functions/QuadraticTest.h
similarity index 92%
rename from Framework/CurveFitting/test/QuadraticTest.h
rename to Framework/CurveFitting/test/Functions/QuadraticTest.h
index 110a2f079bbd45b51546c5fddc2e384197dc4ce8..293b34a479a774bb824a08c6e21c509b25d17a39 100644
--- a/Framework/CurveFitting/test/QuadraticTest.h
+++ b/Framework/CurveFitting/test/Functions/QuadraticTest.h
@@ -3,9 +3,9 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Quadratic.h"
+#include "MantidCurveFitting/Functions/Quadratic.h"
 
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -17,8 +17,8 @@
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
-using Mantid::CurveFitting::Quadratic;
-using Mantid::CurveFitting::Fit;
+using Mantid::CurveFitting::Functions::Quadratic;
+using Mantid::CurveFitting::Algorithms::Fit;
 using namespace Mantid::DataObjects;
 using namespace Mantid::DataHandling;
 
diff --git a/Framework/CurveFitting/test/ReflectivityMulfTest.h b/Framework/CurveFitting/test/Functions/ReflectivityMulfTest.h
similarity index 96%
rename from Framework/CurveFitting/test/ReflectivityMulfTest.h
rename to Framework/CurveFitting/test/Functions/ReflectivityMulfTest.h
index 7c045ddccc3a764e0a3126bfa990e485fb6cee90..b32cfb9c05f1a3aa4c7e65b45a632af23e3b5853 100644
--- a/Framework/CurveFitting/test/ReflectivityMulfTest.h
+++ b/Framework/CurveFitting/test/Functions/ReflectivityMulfTest.h
@@ -3,13 +3,14 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ReflectivityMulf.h"
+#include "MantidCurveFitting/Functions/ReflectivityMulf.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 
 class ReflectivityMulfTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/ResolutionTest.h b/Framework/CurveFitting/test/Functions/ResolutionTest.h
similarity index 96%
rename from Framework/CurveFitting/test/ResolutionTest.h
rename to Framework/CurveFitting/test/Functions/ResolutionTest.h
index 5dfdd646bdea04ae81665ad2bee4fabb533325a4..7ac7e7a642c912f6a0cd301f390f0908b776dedb 100644
--- a/Framework/CurveFitting/test/ResolutionTest.h
+++ b/Framework/CurveFitting/test/Functions/ResolutionTest.h
@@ -3,9 +3,9 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Resolution.h"
-#include "MantidCurveFitting/Fit.h"
-#include "MantidCurveFitting/Convolution.h"
+#include "MantidCurveFitting/Functions/Resolution.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
+#include "MantidCurveFitting/Functions/Convolution.h"
 #include "MantidAPI/IPeakFunction.h"
 #include "MantidAPI/FunctionFactory.h"
 #include <Poco/File.h>
@@ -13,6 +13,7 @@
 #include <fstream>
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class ResolutionTest_Gauss : public IPeakFunction {
@@ -169,7 +170,7 @@ public:
     conv.addFunction(res);
     conv.addFunction(gauss);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
     fit.setPropertyValue("Function", conv.asString());
     fit.setPropertyValue("InputWorkspace", "ResolutionTest_WS");
diff --git a/Framework/CurveFitting/test/SimpleChebfunTest.h b/Framework/CurveFitting/test/Functions/SimpleChebfunTest.h
similarity index 98%
rename from Framework/CurveFitting/test/SimpleChebfunTest.h
rename to Framework/CurveFitting/test/Functions/SimpleChebfunTest.h
index 7d13981bb5581d93df5691dcdcf992a64f561550..c512c001280461964ebd0b5a38694aae74a7d6e9 100644
--- a/Framework/CurveFitting/test/SimpleChebfunTest.h
+++ b/Framework/CurveFitting/test/Functions/SimpleChebfunTest.h
@@ -3,12 +3,13 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/SimpleChebfun.h"
+#include "MantidCurveFitting/Functions/SimpleChebfun.h"
 #include <cmath>
 
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 
 namespace {
 double Sin(double x) { return sin(x); }
diff --git a/Framework/CurveFitting/test/StaticKuboToyabeTest.h b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTest.h
similarity index 91%
rename from Framework/CurveFitting/test/StaticKuboToyabeTest.h
rename to Framework/CurveFitting/test/Functions/StaticKuboToyabeTest.h
index 6d188da076a69e7035b6f2e9c8dd7ad74e085c03..75aabd12039f6c9253ca7a6683e7352c39939be0 100644
--- a/Framework/CurveFitting/test/StaticKuboToyabeTest.h
+++ b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/StaticKuboToyabe.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabe.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +19,7 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::DataObjects;
 
 class StaticKuboToyabeTest : public CxxTest::TestSuite {
@@ -50,7 +51,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/StaticKuboToyabeTimesExpDecayTest.h b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesExpDecayTest.h
similarity index 91%
rename from Framework/CurveFitting/test/StaticKuboToyabeTimesExpDecayTest.h
rename to Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesExpDecayTest.h
index 1546f743eefec9d8b70eae292361d17d15c34f32..41872069e5d1ce649428af575ca217ba8050f801 100644
--- a/Framework/CurveFitting/test/StaticKuboToyabeTimesExpDecayTest.h
+++ b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesExpDecayTest.h
@@ -3,16 +3,18 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/StaticKuboToyabeTimesExpDecay.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabeTimesExpDecay.h"
 #include "MantidAPI/FunctionFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 
-using Mantid::CurveFitting::StaticKuboToyabeTimesExpDecay;
+using Mantid::CurveFitting::Functions::StaticKuboToyabeTimesExpDecay;
 
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class StaticKuboToyabeTimesExpDecayTest : public CxxTest::TestSuite {
@@ -69,7 +71,7 @@ public:
   }
 
   void test_AgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/StaticKuboToyabeTimesGausDecayTest.h b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesGausDecayTest.h
similarity index 91%
rename from Framework/CurveFitting/test/StaticKuboToyabeTimesGausDecayTest.h
rename to Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesGausDecayTest.h
index e49a1065582563e8098f0e810c661b1418d0b023..f257182091434c6f21ab1bac0b9c17afa3e90b29 100644
--- a/Framework/CurveFitting/test/StaticKuboToyabeTimesGausDecayTest.h
+++ b/Framework/CurveFitting/test/Functions/StaticKuboToyabeTimesGausDecayTest.h
@@ -3,15 +3,17 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/StaticKuboToyabeTimesGausDecay.h"
+#include "MantidCurveFitting/Functions/StaticKuboToyabeTimesGausDecay.h"
 #include "MantidAPI/FunctionFactory.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidDataObjects/Workspace2D.h"
 
-using Mantid::CurveFitting::StaticKuboToyabeTimesGausDecay;
+using Mantid::CurveFitting::Functions::StaticKuboToyabeTimesGausDecay;
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class StaticKuboToyabeTimesGausDecayTest : public CxxTest::TestSuite {
@@ -68,7 +70,7 @@ public:
   }
 
   void test_AgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/StretchExpMuonTest.h b/Framework/CurveFitting/test/Functions/StretchExpMuonTest.h
similarity index 91%
rename from Framework/CurveFitting/test/StretchExpMuonTest.h
rename to Framework/CurveFitting/test/Functions/StretchExpMuonTest.h
index dcf022beceeabfaa68bd7539a38575e69929b90b..8bbbfb9041cd005233bdd865d79009bcdcb0f444 100644
--- a/Framework/CurveFitting/test/StretchExpMuonTest.h
+++ b/Framework/CurveFitting/test/Functions/StretchExpMuonTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/StretchExpMuon.h"
+#include "MantidCurveFitting/Functions/StretchExpMuon.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -19,6 +19,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class StretchExpMuonTest : public CxxTest::TestSuite {
@@ -54,7 +56,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/StretchExpTest.h b/Framework/CurveFitting/test/Functions/StretchExpTest.h
similarity index 93%
rename from Framework/CurveFitting/test/StretchExpTest.h
rename to Framework/CurveFitting/test/Functions/StretchExpTest.h
index 8ad7fbd15465389bc445b84126dcbe845ee15314..a17208356f7b9261d4ab4551706426a3fe683297 100644
--- a/Framework/CurveFitting/test/StretchExpTest.h
+++ b/Framework/CurveFitting/test/Functions/StretchExpTest.h
@@ -3,11 +3,11 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/StretchExp.h"
+#include "MantidCurveFitting/Functions/StretchExp.h"
 #include "MantidAPI/CompositeFunction.h"
-#include "MantidCurveFitting/LinearBackground.h"
-#include "MantidCurveFitting/BoundaryConstraint.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/Functions/LinearBackground.h"
+#include "MantidCurveFitting/Constraints/BoundaryConstraint.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
@@ -21,6 +21,8 @@
 using namespace Mantid::Kernel;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
+using namespace Mantid::CurveFitting::Algorithms;
 using namespace Mantid::DataObjects;
 
 class StretchExpTest_Jacobian : public Mantid::API::Jacobian {
@@ -65,7 +67,7 @@ public:
   }
 
   void testAgainstMockData() {
-    Fit alg2;
+    Algorithms::Fit alg2;
     TS_ASSERT_THROWS_NOTHING(alg2.initialize());
     TS_ASSERT(alg2.isInitialized());
 
diff --git a/Framework/CurveFitting/test/TabulatedFunctionTest.h b/Framework/CurveFitting/test/Functions/TabulatedFunctionTest.h
similarity index 98%
rename from Framework/CurveFitting/test/TabulatedFunctionTest.h
rename to Framework/CurveFitting/test/Functions/TabulatedFunctionTest.h
index f243adc77658f580826be8c15e34342bf1fbb2ad..1937f365c1cab0b8a9f5d3f4a557868d3c3ed357 100644
--- a/Framework/CurveFitting/test/TabulatedFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/TabulatedFunctionTest.h
@@ -3,8 +3,8 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/TabulatedFunction.h"
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/Functions/TabulatedFunction.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidCurveFitting/Jacobian.h"
 #include "MantidAPI/FunctionDomain.h"
 #include "MantidAPI/AlgorithmFactory.h"
@@ -19,6 +19,7 @@
 #include <fstream>
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 namespace {
diff --git a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpAlphaTest.h b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpAlphaTest.h
similarity index 90%
rename from Framework/CurveFitting/test/ThermalNeutronBk2BkExpAlphaTest.h
rename to Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpAlphaTest.h
index 93179e749256588a67025dc326afb4959f9e1955..5a61091389e989eee6469986bb54e6cccf5bc672 100644
--- a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpAlphaTest.h
+++ b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpAlphaTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpAlpha.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpAlpha.h"
 
 using namespace Mantid;
-using Mantid::CurveFitting::ThermalNeutronBk2BkExpAlpha;
+using Mantid::CurveFitting::Functions::ThermalNeutronBk2BkExpAlpha;
 
 class ThermalNeutronBk2BkExpAlphaTest : public CxxTest::TestSuite {
 public:
@@ -36,7 +36,7 @@ public:
     vec_tof.push_back(124187);
 
     // 2. Initialize the method
-    Mantid::CurveFitting::ThermalNeutronBk2BkExpAlpha function;
+    ThermalNeutronBk2BkExpAlpha function;
     function.initialize();
 
     function.setParameter("Alph0", 4.026);
diff --git a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpBetaTest.h b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpBetaTest.h
similarity index 90%
rename from Framework/CurveFitting/test/ThermalNeutronBk2BkExpBetaTest.h
rename to Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpBetaTest.h
index 226e9229d10ac60170f0eb72ae3c26767133d927..978370be21897feafe65708f61d40d7e7a0b7a24 100644
--- a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpBetaTest.h
+++ b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpBetaTest.h
@@ -3,10 +3,10 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpBeta.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpBeta.h"
 
 using namespace Mantid;
-using Mantid::CurveFitting::ThermalNeutronBk2BkExpBeta;
+using Mantid::CurveFitting::Functions::ThermalNeutronBk2BkExpBeta;
 
 class ThermalNeutronBk2BkExpBetaTest : public CxxTest::TestSuite {
 public:
@@ -36,7 +36,7 @@ public:
     vec_tof.push_back(124187);
 
     // 2. Initialize the method
-    Mantid::CurveFitting::ThermalNeutronBk2BkExpBeta function;
+    ThermalNeutronBk2BkExpBeta function;
     function.initialize();
 
     function.setParameter("Beta0", 3.489);
diff --git a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpConvPVoigtTest.h b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpConvPVoigtTest.h
similarity index 99%
rename from Framework/CurveFitting/test/ThermalNeutronBk2BkExpConvPVoigtTest.h
rename to Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpConvPVoigtTest.h
index 0be6d35d56e5ee0d15c12d432c080c335aaf0964..ee593a2d2fbb7f09ae2663dc081eba4d765c95b4 100644
--- a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpConvPVoigtTest.h
+++ b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpConvPVoigtTest.h
@@ -5,12 +5,12 @@
 #include <fstream>
 #include <cmath>
 
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpConvPVoigt.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpConvPVoigt.h"
 
 using namespace Mantid;
 using namespace Kernel;
 using namespace std;
-using Mantid::CurveFitting::ThermalNeutronBk2BkExpConvPVoigt;
+using Mantid::CurveFitting::Functions::ThermalNeutronBk2BkExpConvPVoigt;
 
 class ThermalNeutronBk2BkExpConvPVoigtTest : public CxxTest::TestSuite {
 public:
@@ -137,7 +137,7 @@ public:
     generateData(vecX, vecY, vecE);
 
     // 1. Create peak
-    CurveFitting::ThermalNeutronBk2BkExpConvPVoigt peak;
+    ThermalNeutronBk2BkExpConvPVoigt peak;
     peak.initialize();
 
     peak.setMillerIndex(1, 1, 1);
diff --git a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpSigmaTest.h b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpSigmaTest.h
similarity index 89%
rename from Framework/CurveFitting/test/ThermalNeutronBk2BkExpSigmaTest.h
rename to Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpSigmaTest.h
index 3e861dafcbdd461b342e18e1a692e2c113528995..cdc782f28503b2189db8142fda18c6ed8420b43e 100644
--- a/Framework/CurveFitting/test/ThermalNeutronBk2BkExpSigmaTest.h
+++ b/Framework/CurveFitting/test/Functions/ThermalNeutronBk2BkExpSigmaTest.h
@@ -3,9 +3,9 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/ThermalNeutronBk2BkExpSigma.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronBk2BkExpSigma.h"
 
-using Mantid::CurveFitting::ThermalNeutronBk2BkExpSigma;
+using Mantid::CurveFitting::Functions::ThermalNeutronBk2BkExpSigma;
 using namespace Mantid;
 
 class ThermalNeutronBk2BkExpSigmaTest : public CxxTest::TestSuite {
@@ -36,7 +36,7 @@ public:
     vec_tof.push_back(124187);
 
     // 2. Initialize the method
-    Mantid::CurveFitting::ThermalNeutronBk2BkExpSigma function;
+    ThermalNeutronBk2BkExpSigma function;
     function.initialize();
 
     function.setParameter("Sig2", sqrt(11.380));
diff --git a/Framework/CurveFitting/test/ThermalNeutronDtoTOFFunctionTest.h b/Framework/CurveFitting/test/Functions/ThermalNeutronDtoTOFFunctionTest.h
similarity index 95%
rename from Framework/CurveFitting/test/ThermalNeutronDtoTOFFunctionTest.h
rename to Framework/CurveFitting/test/Functions/ThermalNeutronDtoTOFFunctionTest.h
index e24ea0b0262732010a508f4e85abeb1dacfa30d8..ef8adbfa43e6989e178c00b1fc2908887de122dc 100644
--- a/Framework/CurveFitting/test/ThermalNeutronDtoTOFFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/ThermalNeutronDtoTOFFunctionTest.h
@@ -6,11 +6,11 @@
 #include <math.h>
 #include <fstream>
 
-#include "MantidCurveFitting/ThermalNeutronDtoTOFFunction.h"
+#include "MantidCurveFitting/Functions/ThermalNeutronDtoTOFFunction.h"
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
 
-using Mantid::CurveFitting::ThermalNeutronDtoTOFFunction;
+using Mantid::CurveFitting::Functions::ThermalNeutronDtoTOFFunction;
 using namespace Mantid;
 using namespace Mantid::API;
 
@@ -44,7 +44,7 @@ public:
     vec_tof.push_back(124187);
 
     // 2. Initialize the method
-    Mantid::CurveFitting::ThermalNeutronDtoTOFFunction function;
+    ThermalNeutronDtoTOFFunction function;
     function.initialize();
 
     function.setParameter("Dtt1", 22777.1);
diff --git a/Framework/CurveFitting/test/UserFunction1DTest.h b/Framework/CurveFitting/test/Functions/UserFunction1DTest.h
similarity index 96%
rename from Framework/CurveFitting/test/UserFunction1DTest.h
rename to Framework/CurveFitting/test/Functions/UserFunction1DTest.h
index 43abd49d3c90739abf922eac37866fa98c5f0ecb..8ea1cd7792cca9458adabe1b2842ce987f6e0ac9 100644
--- a/Framework/CurveFitting/test/UserFunction1DTest.h
+++ b/Framework/CurveFitting/test/Functions/UserFunction1DTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/UserFunction1D.h"
+#include "MantidCurveFitting/Functions/UserFunction1D.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/FrameworkManager.h"
 #include "MantidDataObjects/Workspace2D.h"
@@ -11,6 +11,7 @@
 #include "MantidAPI/ITableWorkspace.h"
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class UserFunction1DTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/UserFunctionTest.h b/Framework/CurveFitting/test/Functions/UserFunctionTest.h
similarity index 95%
rename from Framework/CurveFitting/test/UserFunctionTest.h
rename to Framework/CurveFitting/test/Functions/UserFunctionTest.h
index 7355f7120938957f2b0057217199df9962db4214..b527257a1754fe4503333ffb399c9b3db34eafe7 100644
--- a/Framework/CurveFitting/test/UserFunctionTest.h
+++ b/Framework/CurveFitting/test/Functions/UserFunctionTest.h
@@ -3,11 +3,12 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidAPI/Jacobian.h"
 #include "MantidAPI/FunctionDomain1D.h"
 
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::API;
 
 class UserFunctionTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/VesuvioResolutionTest.h b/Framework/CurveFitting/test/Functions/VesuvioResolutionTest.h
similarity index 96%
rename from Framework/CurveFitting/test/VesuvioResolutionTest.h
rename to Framework/CurveFitting/test/Functions/VesuvioResolutionTest.h
index 2e0fe33a435ea860f9d78d19a367bdbe1ecc6ade..8488b55e50588cf4734bf3b03463c4c3dd374660 100644
--- a/Framework/CurveFitting/test/VesuvioResolutionTest.h
+++ b/Framework/CurveFitting/test/Functions/VesuvioResolutionTest.h
@@ -2,11 +2,11 @@
 #define MANTID_CURVEFITTING_VESUVIORESOLUTIONTEST_H_
 
 #include <cxxtest/TestSuite.h>
-#include "MantidCurveFitting/VesuvioResolution.h"
+#include "MantidCurveFitting/Functions/VesuvioResolution.h"
 
 #include "ComptonProfileTestHelpers.h"
 
-using Mantid::CurveFitting::VesuvioResolution;
+using Mantid::CurveFitting::Functions::VesuvioResolution;
 
 class VesuvioResolutionTest : public CxxTest::TestSuite {
 public:
diff --git a/Framework/CurveFitting/test/VoigtTest.h b/Framework/CurveFitting/test/Functions/VoigtTest.h
similarity index 98%
rename from Framework/CurveFitting/test/VoigtTest.h
rename to Framework/CurveFitting/test/Functions/VoigtTest.h
index 769a77f2d4b6c5e9f70cb825bbf23d2553d9add5..74c76e0aa518baa8c9d7ed76c45d70b2b04ea523 100644
--- a/Framework/CurveFitting/test/VoigtTest.h
+++ b/Framework/CurveFitting/test/Functions/VoigtTest.h
@@ -3,7 +3,7 @@
 
 #include <cxxtest/TestSuite.h>
 
-#include "MantidCurveFitting/Voigt.h"
+#include "MantidCurveFitting/Functions/Voigt.h"
 
 #include "MantidAPI/FunctionDomain1D.h"
 #include "MantidAPI/FunctionValues.h"
@@ -12,7 +12,7 @@
 #include <boost/scoped_ptr.hpp>
 #include <boost/make_shared.hpp>
 
-using Mantid::CurveFitting::Voigt;
+using Mantid::CurveFitting::Functions::Voigt;
 using Mantid::API::IFunction;
 
 class VoigtTest : public CxxTest::TestSuite {
diff --git a/Framework/CurveFitting/test/valgrind.h b/Framework/CurveFitting/test/Functions/valgrind.h
similarity index 100%
rename from Framework/CurveFitting/test/valgrind.h
rename to Framework/CurveFitting/test/Functions/valgrind.h
diff --git a/Framework/CurveFitting/test/MultiDomainCreatorTest.h b/Framework/CurveFitting/test/MultiDomainCreatorTest.h
index 96f3dbab2de5fe35887c085723e248f5d63407bd..1694bf0d114b7a05bd639b8defe1c3786fc4461d 100644
--- a/Framework/CurveFitting/test/MultiDomainCreatorTest.h
+++ b/Framework/CurveFitting/test/MultiDomainCreatorTest.h
@@ -12,7 +12,7 @@
 #include "MantidAPI/ParamFunction.h"
 #include "MantidCurveFitting/MultiDomainCreator.h"
 #include "MantidCurveFitting/FitMW.h"
-#include "MantidCurveFitting/UserFunction.h"
+#include "MantidCurveFitting/Functions/UserFunction.h"
 #include "MantidKernel/PropertyManager.h"
 
 #include "MantidTestHelpers/FakeObjects.h"
@@ -24,6 +24,7 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 
 class MultiDomainCreatorTest_Fun : public IFunction1D, public ParamFunction {
 public:
diff --git a/Framework/CurveFitting/test/MultiDomainFunctionTest.h b/Framework/CurveFitting/test/MultiDomainFunctionTest.h
index afc12650780ca6f0e630e1e0a5dae6083a6d3a1f..b379b210af6f1737273136468e9e6e052958e2f0 100644
--- a/Framework/CurveFitting/test/MultiDomainFunctionTest.h
+++ b/Framework/CurveFitting/test/MultiDomainFunctionTest.h
@@ -9,9 +9,9 @@
 #include "MantidAPI/ParamFunction.h"
 #include "MantidAPI/AlgorithmManager.h"
 #include "MantidAPI/FrameworkManager.h"
-#include "MantidCurveFitting/CostFuncLeastSquares.h"
-#include "MantidCurveFitting/LevenbergMarquardtMDMinimizer.h"
-#include "MantidCurveFitting/Fit.h"
+#include "MantidCurveFitting/CostFunctions/CostFuncLeastSquares.h"
+#include "MantidCurveFitting/FuncMinimizers/LevenbergMarquardtMDMinimizer.h"
+#include "MantidCurveFitting/Algorithms/Fit.h"
 
 #include "MantidTestHelpers/FakeObjects.h"
 
@@ -22,6 +22,8 @@
 using namespace Mantid;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::CostFunctions;
+using namespace Mantid::CurveFitting::Algorithms;
 
 class MultiDomainFunctionTest_Function : public virtual IFunction1D,
                                          public virtual ParamFunction {
@@ -161,7 +163,7 @@ public:
     costFun->setFittingFunction(multi, domain, values);
     TS_ASSERT_EQUALS(costFun->nParams(), 6);
 
-    LevenbergMarquardtMDMinimizer s;
+    FuncMinimisers::LevenbergMarquardtMDMinimizer s;
     s.initialize(costFun);
     TS_ASSERT(s.minimize());
 
@@ -185,7 +187,7 @@ public:
     multi->getFunction(2)->setParameter("A", 0);
     multi->getFunction(2)->setParameter("B", 0);
 
-    Fit fit;
+    Algorithms::Fit fit;
     fit.initialize();
     fit.setProperty("Function", boost::dynamic_pointer_cast<IFunction>(multi));
     fit.setProperty("InputWorkspace", ws1);
diff --git a/Framework/CurveFitting/test/SpecialFunctionSupportTest.h b/Framework/CurveFitting/test/SpecialFunctionSupportTest.h
index 4117c204942f384dd9403e591a2232cd5aeee87f..60cef0c51dcc6e96a18cd04a3ae6d78e49cb90e0 100644
--- a/Framework/CurveFitting/test/SpecialFunctionSupportTest.h
+++ b/Framework/CurveFitting/test/SpecialFunctionSupportTest.h
@@ -5,7 +5,7 @@
 #include <complex>
 #include "MantidCurveFitting/SpecialFunctionSupport.h"
 
-#include "MantidCurveFitting/Lorentzian1D.h"
+#include "MantidCurveFitting/Functions/Lorentzian1D.h"
 #include "MantidKernel/UnitFactory.h"
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/WorkspaceFactory.h"
diff --git a/Framework/MDAlgorithms/src/ConvertToReflectometryQ.cpp b/Framework/MDAlgorithms/src/ConvertToReflectometryQ.cpp
index 1431b38ae0e1e338d1d4035d2b67584c9cba4ff4..fe2dfbcc3e23ed987c6f0bb5d042c46f8b37ded7 100644
--- a/Framework/MDAlgorithms/src/ConvertToReflectometryQ.cpp
+++ b/Framework/MDAlgorithms/src/ConvertToReflectometryQ.cpp
@@ -353,40 +353,54 @@ void ConvertToReflectometryQ::exec() {
 
   TableWorkspace_sptr vertexes =
       boost::make_shared<Mantid::DataObjects::TableWorkspace>();
-
+  Progress transSelectionProg(this, 0.0, 0.1, 2);
   if (outputAsMDWorkspace) {
+    transSelectionProg.report("Choosing Transformation");
     if (transMethod == centerTransform()) {
       auto outputMDWS = transform->executeMD(inputWs, bc);
+      Progress transPerformProg(this, 0.1, 0.7, 5);
+      transPerformProg.report("Performed transformation");
       // Copy ExperimentInfo (instrument, run, sample) to the output WS
       ExperimentInfo_sptr ei(inputWs->cloneExperimentInfo());
       outputMDWS->addExperimentInfo(ei);
       outputWS = outputMDWS;
     } else if (transMethod == normPolyTransform()) {
+      Progress transPerformProg(this, 0.1, 0.7, 5);
       const bool dumpVertexes = this->getProperty("DumpVertexes");
       auto vertexesTable = vertexes;
       // perform the normalised polygon transformation
+      transPerformProg.report("Performing Transformation");
       auto normPolyTrans = transform->executeNormPoly(
           inputWs, vertexesTable, dumpVertexes, outputDimensions);
       // copy any experiment info from input workspace
       normPolyTrans->copyExperimentInfoFrom(inputWs.get());
       // produce MDHistoWorkspace from normPolyTrans workspace.
+      Progress outputToMDProg(this, 0.7, 0.75, 10);
       auto outputMDWS = transform->executeMDNormPoly(normPolyTrans);
       ExperimentInfo_sptr ei(normPolyTrans->cloneExperimentInfo());
       outputMDWS->addExperimentInfo(ei);
       outputWS = outputMDWS;
+      outputToMDProg.report("Successfully output to MD");
     } else {
       throw std::runtime_error("Unknown rebinning method: " + transMethod);
     }
   } else if (transMethod == normPolyTransform()) {
+    transSelectionProg.report("Choosing Transformation");
+    Progress transPerformProg(this, 0.1, 0.7, 5);
     const bool dumpVertexes = this->getProperty("DumpVertexes");
     auto vertexesTable = vertexes;
     // perform the normalised polygon transformation
+    transPerformProg.report("Performing Transformation");
     auto output2DWS = transform->executeNormPoly(
         inputWs, vertexesTable, dumpVertexes, outputDimensions);
     // copy any experiment info from input workspace
     output2DWS->copyExperimentInfoFrom(inputWs.get());
     outputWS = output2DWS;
+    transPerformProg.report("Transformation Complete");
   } else if (transMethod == centerTransform()) {
+    transSelectionProg.report("Choosing Transformation");
+    Progress transPerformProg(this, 0.1, 0.7, 5);
+    transPerformProg.report("Performing Transformation");
     auto output2DWS = transform->execute(inputWs);
     output2DWS->copyExperimentInfoFrom(inputWs.get());
     outputWS = output2DWS;
@@ -397,6 +411,8 @@ void ConvertToReflectometryQ::exec() {
   // Execute the transform and bind to the output.
   setProperty("OutputWorkspace", outputWS);
   setProperty("OutputVertexes", vertexes);
+  Progress setPropertyProg(this, 0.8, 1.0, 2);
+  setPropertyProg.report("Success");
 }
 
 } // namespace Mantid
diff --git a/Framework/PythonInterface/plugins/algorithms/TOFTOFMergeRuns.py b/Framework/PythonInterface/plugins/algorithms/TOFTOFMergeRuns.py
new file mode 100644
index 0000000000000000000000000000000000000000..443a8249b46b60ca036b0bec1e6482e55d983c88
--- /dev/null
+++ b/Framework/PythonInterface/plugins/algorithms/TOFTOFMergeRuns.py
@@ -0,0 +1,191 @@
+from mantid.kernel import Direction, StringArrayProperty, StringArrayLengthValidator
+from mantid.api import PythonAlgorithm, AlgorithmFactory, WorkspaceProperty, WorkspaceGroup
+import mantid.simpleapi as api
+import numpy as np
+from dateutil.parser import parse
+import mlzutils
+
+
+class TOFTOFMergeRuns(PythonAlgorithm):
+    """ Clean the Sample Logs of workspace after merging for TOFTOF instrument
+    """
+
+    mandatory_properties = ['channel_width', 'chopper_ratio', 'chopper_speed', 'Ei', 'wavelength', 'full_channels', 'EPP']
+    optional_properties = ['temperature', 'run_title']
+    properties_to_merge = ['temperature', 'monitor_counts', 'duration', 'run_number', 'run_start', 'run_end']
+    must_have_properties = ['monitor_counts', 'duration', 'run_number', 'run_start', 'run_end']
+
+    def __init__(self):
+        """
+        Init
+        """
+        PythonAlgorithm.__init__(self)
+
+    def category(self):
+        """ Return category
+        """
+        return "PythonAlgorithms\\MLZ\\TOFTOF;Utility"
+
+    def name(self):
+        """ Return summary
+        """
+        return "TOFTOFMergeRuns"
+
+    def summary(self):
+        return "Merge runs and the sample logs."
+
+    def PyInit(self):
+        """ Declare properties
+        """
+        validator = StringArrayLengthValidator()
+        validator.setLengthMin(1)
+        self.declareProperty(StringArrayProperty(name="InputWorkspaces", direction=Direction.Input, validator=validator),
+                             doc="Comma separated list of workspaces or groups of workspaces.")
+        self.declareProperty(WorkspaceProperty("OutputWorkspace", "", direction=Direction.Output),
+                             doc="Name of the workspace that will contain the merged workspaces.")
+        return
+
+    def _validate_input(self):
+        """
+        Checks for the valid input:
+            all given workspaces and/or groups must exist
+            gets names of the grouped workspaces
+        """
+        workspaces = self.getProperty("InputWorkspaces").value
+        mlzutils.ws_exist(workspaces, self.log())
+        input_workspaces = []
+        if len(workspaces) < 1:
+            message = "List of workspaces is empty. Nothing to merge."
+            self.log().error(message)
+            raise RuntimeError(message)
+        for wsname in workspaces:
+            wks = api.AnalysisDataService.retrieve(wsname)
+            if isinstance(wks, WorkspaceGroup):
+                input_workspaces.extend(wks.getNames())
+            else:
+                input_workspaces.append(wsname)
+        return input_workspaces
+
+    def _can_merge(self, wsnames):
+        """
+        Checks whether given workspaces can be merged
+        """
+        # mandatory properties must be identical
+        mlzutils.compare_mandatory(wsnames, self.mandatory_properties, self.log())
+
+        # timing (x-axis binning) must match
+        # is it possible to use WorkspaceHelpers::matchingBins from python?
+        self.timingsMatch(wsnames)
+
+        # Check sample logs for must have properties
+        for wsname in wsnames:
+            wks = api.AnalysisDataService.retrieve(wsname)
+            run = wks.getRun()
+            for prop in self.must_have_properties:
+                if not run.hasProperty(prop):
+                    message = "Error: Workspace " + wsname + " does not have property " + prop +\
+                        ". Cannot merge."
+                    self.log().error(message)
+                    raise RuntimeError(message)
+
+        # warnig if optional properties are not identical must be given
+        ws1 = api.AnalysisDataService.retrieve(wsnames[0])
+        run1 = ws1.getRun()
+        for wsname in wsnames[1:]:
+            wks = api.AnalysisDataService.retrieve(wsname)
+            run = wks.getRun()
+            mlzutils.compare_properties(run1, run, self.optional_properties, self.log(), tolerance=0.01)
+        return True
+
+    def PyExec(self):
+        """ Main execution body
+        """
+        # get list of input workspaces
+        input_workspace_list = self._validate_input()
+        workspaceCount = len(input_workspace_list)
+        self.log().information("Workspaces to merge " + str(workspaceCount))
+        wsOutput = self.getPropertyValue("OutputWorkspace")
+
+        if workspaceCount < 2:
+            api.CloneWorkspace(InputWorkspace=self.wsNames[0], OutputWorkspace=wsOutput)
+            self.log().warning("Cannot merge one workspace. Clone is produced.")
+            return
+
+        # check whether given workspaces can be merged
+        self._can_merge(input_workspace_list)
+
+        # delete output workspace if it exists
+        if api.mtd.doesExist(wsOutput):
+            api.DeleteWorkspace(Workspace=wsOutput)
+
+        #  Merge runs
+        api.MergeRuns(InputWorkspaces=input_workspace_list, OutputWorkspace=wsOutput)
+
+        # Merge logs
+        # MergeRuns by default copies all logs from the first workspace
+        pdict = {}
+        for prop in self.properties_to_merge:
+            pdict[prop] = []
+
+        for wsname in input_workspace_list:
+            wks = api.AnalysisDataService.retrieve(wsname)
+            run = wks.getRun()
+            for prop in self.properties_to_merge:
+                if run.hasProperty(prop):
+                    pdict[prop].append(run.getProperty(prop).value)
+
+        # take average for temperatures
+        nentries = len(pdict['temperature'])
+        if nentries > 0:
+            temps = [float(temp) for temp in pdict['temperature']]
+            tmean = sum(temps)/nentries
+            api.AddSampleLog(Workspace=wsOutput, LogName='temperature', LogText=str(tmean),
+                             LogType='Number', LogUnit='K')
+        # sum monitor counts
+        mcounts = [int(mco) for mco in pdict['monitor_counts']]
+        # check for zero monitor counts
+        zeros = np.where(np.array(mcounts) == 0)[0]
+        if len(zeros) > 0:
+            for index in zeros:
+                self.log().warning("Workspace " + self.wsNames[index] + " has zero monitor counts.")
+        # create sample log
+        api.AddSampleLog(Workspace=wsOutput, LogName='monitor_counts', LogText=str(sum(mcounts)),
+                         LogType='Number')
+        # sum durations
+        durations = [int(dur) for dur in pdict['duration']]
+        api.AddSampleLog(Workspace=wsOutput, LogName='duration', LogText=str(sum(durations)),
+                         LogType='Number', LogUnit='s')
+        # get minimal run_start
+        fmt = "%Y-%m-%dT%H:%M:%S%z"
+        run_start = [parse(entry) for entry in pdict['run_start']]
+        api.AddSampleLog(Workspace=wsOutput, LogName='run_start',
+                         LogText=min(run_start).strftime(fmt), LogType='String')
+        # get maximal run_end
+        run_end = [parse(entry) for entry in pdict['run_end']]
+        api.AddSampleLog(Workspace=wsOutput, LogName='run_end',
+                         LogText=max(run_end).strftime(fmt), LogType='String')
+        # list of run_numbers
+        api.AddSampleLog(Workspace=wsOutput, LogName='run_number',
+                         LogText=str(pdict['run_number']), LogType='String')
+
+        self.setProperty("OutputWorkspace", wsOutput)
+
+    def timingsMatch(self, wsNames):
+        """
+        :param wsNames:
+        :return:
+        """
+        for i in range(len(wsNames)):
+            leftWorkspace = wsNames[i]
+            rightWorkspace = wsNames[i+1]
+            leftXData = api.mtd[leftWorkspace].dataX(0)
+            rightXData = api.mtd[rightWorkspace].dataX(0)
+            leftDeltaX = leftXData[0] - leftXData[1]
+            rightDeltaX = rightXData[0] - rightXData[1]
+            if abs(leftDeltaX - rightDeltaX) >= 1e-4 or abs(rightXData[0] - leftXData[0]) >= 1e-4:
+                raise RuntimeError("Timings don't match")
+            else:
+                return True
+
+# Register algorithm with Mantid.
+AlgorithmFactory.subscribe(TOFTOFMergeRuns)
diff --git a/Framework/PythonInterface/plugins/algorithms/mlzutils.py b/Framework/PythonInterface/plugins/algorithms/mlzutils.py
index 11929ab069adf73a25a143413a867ff4127985b6..3b69302522b7ef2cd6d2eba41c946e3e548d5673 100644
--- a/Framework/PythonInterface/plugins/algorithms/mlzutils.py
+++ b/Framework/PythonInterface/plugins/algorithms/mlzutils.py
@@ -55,7 +55,7 @@ def ws_exist(wslist, logger):
     return True
 
 
-def compare_properties(lhs_run, rhs_run, plist, logger):
+def compare_properties(lhs_run, rhs_run, plist, logger, tolerance=5e-3):
     """
     checks whether properties match in the given runs, produces warnings
         @param lhs_run Left-hand-side run
@@ -65,11 +65,16 @@ def compare_properties(lhs_run, rhs_run, plist, logger):
     """
     lhs_title = ""
     rhs_title = ""
-    if lhs_run.hasProperty('run_title'):
+    if lhs_run.hasProperty('run_title') and rhs_run.hasProperty('run_title'):
         lhs_title = lhs_run.getProperty('run_title').value
-    if rhs_run.hasProperty('run_title'):
         rhs_title = rhs_run.getProperty('run_title').value
 
+    # for TOFTOF run_titles can be identical
+    if lhs_title == rhs_title:
+        if lhs_run.hasProperty('run_number') and rhs_run.hasProperty('run_number'):
+            lhs_title = str(lhs_run.getProperty('run_number').value)
+            rhs_title = str(rhs_run.getProperty('run_number').value)
+
     for property_name in plist:
         if lhs_run.hasProperty(property_name) and rhs_run.hasProperty(property_name):
             lhs_property = lhs_run.getProperty(property_name)
@@ -81,8 +86,8 @@ def compare_properties(lhs_run, rhs_run, plist, logger):
                             lhs_title + ": " + lhs_property.value + ", but " + \
                             rhs_title + ": " + rhs_property.value
                         logger.warning(message)
-                if lhs_property.type == 'number':
-                    if abs(lhs_property.value - rhs_property.value) > 5e-3:
+                elif lhs_property.type == 'number':
+                    if abs(lhs_property.value - rhs_property.value) > tolerance:
                         message = "Property " + property_name + " does not match! " + \
                             lhs_title + ": " + str(lhs_property.value) + ", but " + \
                             rhs_title + ": " + str(rhs_property.value)
@@ -98,3 +103,54 @@ def compare_properties(lhs_run, rhs_run, plist, logger):
                 lhs_title + " or " + rhs_title + " - skipping comparison."
             logger.warning(message)
     return
+
+
+def compare_mandatory(wslist, plist, logger, tolerance=0.01):
+    """
+    Compares properties which are required to be the same.
+    Produces error message and throws exception if difference is observed
+    or if one of the sample logs is not found.
+    Important: exits after the first difference is observed. No further check is performed.
+        @param wslist  List of workspaces
+        @param plist   List of properties to compare
+        @param logger  Logger self.log()
+        @param tolerance  Tolerance for comparison of the double values.
+    """
+    # retrieve the workspaces, form dictionary {wsname: run}
+    runs = {}
+    for wsname in wslist:
+        wks = api.AnalysisDataService.retrieve(wsname)
+        runs[wsname] = wks.getRun()
+
+    for prop in plist:
+        properties = []
+        for wsname in wslist:
+            run = runs[wsname]
+            if not run.hasProperty(prop):
+                message = "Workspace " + wsname + " does not have sample log " + prop
+                logger.error(message)
+                raise RuntimeError(message)
+
+            curprop = run.getProperty(prop)
+            if curprop.type == 'string':
+                properties.append(curprop.value)
+            elif curprop.type == 'number':
+                properties.append(int(curprop.value/tolerance))
+            else:
+                message = "Unknown type " + str(curprop.type) + " for the sample log " +\
+                    prop + " in the workspace " + wsname
+                logger.error(message)
+                raise RuntimeError(message)
+        # this should never happen, but lets check
+        nprop = len(properties)
+        if nprop != len(wslist):
+            message = "Error. Number of properties " + str(nprop) + " for property " + prop +\
+                " is not equal to number of workspaces " + str(len(wslist))
+            logger.error(message)
+            raise RuntimeError(message)
+        pvalue = properties[0]
+        if properties.count(pvalue) != nprop:
+            message = "Sample log " + prop + " is not identical in the given list of workspaces. \n" +\
+                "Workspaces: " + ", ".join(wslist) + "\n Values: " + str(properties)
+            logger.error(message)
+            raise RuntimeError(message)
diff --git a/Framework/PythonInterface/test/python/plugins/algorithms/CMakeLists.txt b/Framework/PythonInterface/test/python/plugins/algorithms/CMakeLists.txt
index bb68b040a2e73b551095e18bf876be0abb92e83b..c12c040cddbff6f851d86f23bfa144fc0bbeb73f 100644
--- a/Framework/PythonInterface/test/python/plugins/algorithms/CMakeLists.txt
+++ b/Framework/PythonInterface/test/python/plugins/algorithms/CMakeLists.txt
@@ -75,6 +75,7 @@ set ( TEST_PY_FILES
   UpdatePeakParameterTableValueTest.py
   SANSSubtractTest.py
   TimeSliceTest.py
+  TOFTOFMergeRunsTest.py
   TOSCABankCorrectionTest.py
   TransformToIqtTest.py
   ExportSampleLogsToCSVFileTest.py
diff --git a/Framework/PythonInterface/test/python/plugins/algorithms/TOFTOFMergeRunsTest.py b/Framework/PythonInterface/test/python/plugins/algorithms/TOFTOFMergeRunsTest.py
new file mode 100644
index 0000000000000000000000000000000000000000..3e0b4dac93aa19f9044bba5ab938da751a5f231c
--- /dev/null
+++ b/Framework/PythonInterface/test/python/plugins/algorithms/TOFTOFMergeRunsTest.py
@@ -0,0 +1,93 @@
+import unittest
+from mantid.simpleapi import Load, DeleteWorkspace, AddSampleLogMultiple, \
+    DeleteLog
+from testhelpers import run_algorithm
+from mantid.api import AnalysisDataService
+
+
+class TOFTOFMergeRunsTest(unittest.TestCase):
+
+    def setUp(self):
+        input_ws = Load(Filename="TOFTOFTestdata.nxs")
+        self._input_ws_base = input_ws
+        self._input_good = input_ws
+        AddSampleLogMultiple(Workspace=self._input_good, LogNames=['run_number'], LogValues=[001])
+
+        self._input_bad_entry = input_ws+0
+        # remove a compulsory entry in Logs
+        DeleteLog(self._input_bad_entry, 'duration')
+
+        self._input_bad_value = input_ws+0
+        AddSampleLogMultiple(Workspace=self._input_bad_value, LogNames=['wavelength'], LogValues=[0.])
+
+    def test_success(self):
+        OutputWorkspaceName = "output_ws"
+        Inputws = "%s, %s" % (self._input_ws_base.name(), self._input_good.name())
+
+        alg_test = run_algorithm("TOFTOFMergeRuns",
+                                 InputWorkspaces=Inputws,
+                                 OutputWorkspace=OutputWorkspaceName)
+        self.assertTrue(alg_test.isExecuted())
+
+        wsoutput = AnalysisDataService.retrieve(OutputWorkspaceName)
+
+        run_out = wsoutput.getRun()
+        run_in = self._input_ws_base.getRun()
+        self.assertEqual(run_out.getLogData('wavelength').value, run_in.getLogData('wavelength').value)
+        self.assertEqual(run_out.getLogData('chopper_speed').value, run_in.getLogData('chopper_speed').value)
+        self.assertEqual(run_out.getLogData('chopper_ratio').value, run_in.getLogData('chopper_ratio').value)
+        self.assertEqual(run_out.getLogData('channel_width').value, run_in.getLogData('channel_width').value)
+        self.assertEqual(run_out.getLogData('Ei').value, run_in.getLogData('Ei').value)
+        self.assertEqual(run_out.getLogData('EPP').value, run_in.getLogData('EPP').value)
+        self.assertEqual(run_out.getLogData('proposal_number').value, run_in.getLogData('proposal_number').value)
+        self.assertEqual(run_out.getLogData('proposal_title').value, run_in.getLogData('proposal_title').value)
+        self.assertEqual(run_out.getLogData('mode').value, run_in.getLogData('mode').value)
+        self.assertEqual(run_out.getLogData('experiment_team').value, run_in.getLogData('experiment_team').value)
+
+        run_in_good = self._input_good.getRun()
+        self.assertEqual(run_out.getLogData('run_number').value,
+                         str([run_in.getLogData('run_number').value, run_in_good.getLogData('run_number').value]))
+
+        self.assertEqual(run_out.getLogData('temperature').value, float(run_in.getLogData('temperature').value))
+        self.assertEqual(run_out.getLogData('duration').value,
+                         float(run_in.getLogData('duration').value) + float(run_in_good.getLogData('duration').value))
+        self.assertEqual(run_out.getLogData('run_start').value, run_in.getLogData('run_start').value)
+        self.assertEqual(run_out.getLogData('run_end').value, run_in.getLogData('run_end').value)
+        self.assertEqual(run_out.getLogData('full_channels').value, run_in.getLogData('full_channels').value)
+        self.assertEqual(run_out.getLogData('monitor_counts').value, 2*int(run_in.getLogData('monitor_counts').value))
+        # Dimension output workspace
+        self.assertEqual(wsoutput.getNumberHistograms(), self._input_ws_base.getNumberHistograms())
+        self.assertEqual(wsoutput.blocksize(), self._input_ws_base.blocksize())
+        # check instrument
+        self.assertEqual(wsoutput.getInstrument().getName(), "TOFTOF")
+
+        AnalysisDataService.remove("output_ws")
+
+    def test_failed(self):
+        """
+        Failed tests because of missing keys or different values
+        """
+        OutputWorkspaceName = "output_ws"
+        Inputws_badvalue = "%s, %s" % (self._input_ws_base.name(), self._input_bad_value.name())
+        self.assertRaises(RuntimeError,
+                          run_algorithm, 'TOFTOFMergeRuns',
+                          InputWorkspaces=Inputws_badvalue,
+                          OutputWorkspace=OutputWorkspaceName,
+                          rethrow=True)
+
+        Inputws_badentry = "%s, %s" % (self._input_ws_base.name(), self._input_bad_entry.name())
+        self.assertRaises(RuntimeError,
+                          run_algorithm, 'TOFTOFMergeRuns',
+                          InputWorkspaces=Inputws_badentry,
+                          OutputWorkspace=OutputWorkspaceName,
+                          rethrow=True)
+
+        if "output_ws" is not None:
+            AnalysisDataService.remove("output_ws")
+
+    def cleanUp(self):
+        if self._input_ws_base is not None:
+            DeleteWorkspace(self._input_ws_base)
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Framework/SINQ/test/PoldiFitPeaks1D2Test.h b/Framework/SINQ/test/PoldiFitPeaks1D2Test.h
index 4ced3e46bad5c158d1d9ef7f047fa179be817d44..35fbec1cc249f38f5f47758afc1a36845b5b3002 100644
--- a/Framework/SINQ/test/PoldiFitPeaks1D2Test.h
+++ b/Framework/SINQ/test/PoldiFitPeaks1D2Test.h
@@ -9,8 +9,7 @@
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/IPeakFunction.h"
 
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/FlatBackground.h"
+#include "MantidCurveFitting/Functions/FlatBackground.h"
 
 #include "MantidSINQ/PoldiUtilities/PoldiPeak.h"
 #include "MantidTestHelpers/WorkspaceCreationHelper.h"
@@ -21,6 +20,7 @@ using Mantid::Poldi::PoldiFitPeaks1D2;
 using namespace Mantid::Poldi;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::Kernel;
 using namespace Mantid::DataObjects;
 
diff --git a/Framework/SINQ/test/PoldiFitPeaks1DTest.h b/Framework/SINQ/test/PoldiFitPeaks1DTest.h
index a2158802104fad5391ed961eec6a2eced22c43b3..452d6472c3987e074ea2ba878042f6b2cca616c4 100644
--- a/Framework/SINQ/test/PoldiFitPeaks1DTest.h
+++ b/Framework/SINQ/test/PoldiFitPeaks1DTest.h
@@ -9,8 +9,7 @@
 #include "MantidAPI/CompositeFunction.h"
 #include "MantidAPI/IPeakFunction.h"
 
-#include "MantidCurveFitting/Gaussian.h"
-#include "MantidCurveFitting/FlatBackground.h"
+#include "MantidCurveFitting/Functions/FlatBackground.h"
 
 #include "MantidSINQ/PoldiUtilities/PoldiPeak.h"
 
@@ -18,6 +17,7 @@ using Mantid::Poldi::PoldiFitPeaks1D;
 using namespace Mantid::Poldi;
 using namespace Mantid::API;
 using namespace Mantid::CurveFitting;
+using namespace Mantid::CurveFitting::Functions;
 using namespace Mantid::Kernel;
 
 class TestablePoldiFitPeaks1D : public Mantid::Poldi::PoldiFitPeaks1D {
diff --git a/Framework/SINQ/test/PoldiSpectrumDomainFunctionTest.h b/Framework/SINQ/test/PoldiSpectrumDomainFunctionTest.h
index f9eb10908965fcbc41cb3fb4ab9d8c382c5a8382..492393f6b0a8a8122190cbd8da275650fb1d74fe 100644
--- a/Framework/SINQ/test/PoldiSpectrumDomainFunctionTest.h
+++ b/Framework/SINQ/test/PoldiSpectrumDomainFunctionTest.h
@@ -12,7 +12,6 @@
 #include "MantidAPI/FunctionValues.h"
 #include "MantidAPI/FunctionFactory.h"
 #include "MantidAPI/MultiDomainFunction.h"
-#include "MantidCurveFitting/Gaussian.h"
 #include "MantidCurveFitting/FitMW.h"
 #include "MantidCurveFitting/Jacobian.h"
 
diff --git a/MantidQt/MantidWidgets/src/MuonSequentialFitDialog.cpp b/MantidQt/MantidWidgets/src/MuonSequentialFitDialog.cpp
index 49ba9501a901953737b28baed4496415ab89b8c3..2169429a18df8d1b89d87677a524940365dd3ffe 100644
--- a/MantidQt/MantidWidgets/src/MuonSequentialFitDialog.cpp
+++ b/MantidQt/MantidWidgets/src/MuonSequentialFitDialog.cpp
@@ -368,28 +368,23 @@ namespace MantidWidgets
 
       MatrixWorkspace_sptr ws;
 
-      auto load = boost::dynamic_pointer_cast<AlgorithmProxy>( AlgorithmManager::Instance().create("MuonLoad") );
-      load->setChild(true);
-      load->setRethrows(true);
-      load->copyPropertiesFrom(*m_loadAlg);
-
-      try
-      {
+      try {
+        auto load = AlgorithmManager::Instance().create("MuonLoad");
         load->initialize();
-
-        load->setPropertyValue( "Filename", fileIt->toStdString() );
-        load->setPropertyValue( "OutputWorkspace", "__YouDontSeeMeIAmNinja" ); // Is not used
-
-        if ( m_fitPropBrowser->rawData() ) // TODO: or vice verca?
-          load->setPropertyValue( "RebinParams", "" );
+        load->setChild(true);
+        load->setRethrows(true);
+        load->updatePropertyValues(*m_loadAlg);
+        load->setPropertyValue("Filename", fileIt->toStdString());
+        load->setPropertyValue("OutputWorkspace", "__YouDontSeeMeIAmNinja");
+        if (m_fitPropBrowser->rawData()) // TODO: or vice verca?
+          load->setPropertyValue("RebinParams", "");
 
         load->execute();
 
         ws = load->getProperty("OutputWorkspace");
-      }
-      catch(...)
-      {
-        QMessageBox::critical(this, "Loading failed", 
+      } catch (...) {
+        QMessageBox::critical(
+            this, "Loading failed",
             "Unable to load one of the files.\n\nCheck log for details");
         break;
       }
diff --git a/buildconfig/move_class.py b/buildconfig/move_class.py
index e51e53c45c28785f805f69b2f99f707b9d2a239b..09b62d51fee7a4296d2b399b93a97d5dfda56511 100755
--- a/buildconfig/move_class.py
+++ b/buildconfig/move_class.py
@@ -15,32 +15,36 @@ def move_one(subproject, classname, newproject, newclassname, oldfilename, newfi
     """Move one file """
 
     # Move the file
-    cmd = "mv " + oldfilename + " " + newfilename
-    if not args.no_vcs:
-        cmd = "git " + cmd
-    print "Running:", cmd
-    retval = os.system(cmd)
-    if retval != 0:
-        raise RuntimeError("Error executing cmd '%s'" % cmd)
-
-    f = open(newfilename, 'r')
-    text = f.read()
-    f.close()
-
-    # Replace any includes of it
-    text = text.replace("Mantid" + subproject + "/" + args.source_subfolder + classname + ".h",
-                        "Mantid" + newproject + "/" + args.dest_subfolder + newclassname + ".h")
-
-    #Replace the guard
-    old_guard = "MANTID_%s_%s_H_" % (subproject.upper(), classname.upper())
-    new_guard = "MANTID_%s_%s_H_" % (newproject.upper(), newclassname.upper())
-    text = text.replace(old_guard, new_guard)
-
-    # Replace the namespace declaration
-    text = text.replace("namespace " + subproject, "namespace " + newproject)
-    # Replace the conents
-    f = open(newfilename, 'w')
-    f.write(text)
+    try:
+        cmd = "mv " + oldfilename + " " + newfilename
+        cmd = cmd.replace("\\","/")
+        if not args.no_vcs:
+            cmd = "git " + cmd
+        print "Running:", cmd
+        retval = os.system(cmd)
+        if retval != 0:
+            raise RuntimeError("Error executing cmd '%s'" % cmd)
+
+        f = open(newfilename, 'r')
+        text = f.read()
+        f.close()
+
+        # Replace any includes of it
+        text = text.replace("Mantid" + subproject + "/" + args.source_subfolder + classname + ".h",
+                            "Mantid" + newproject + "/" + args.dest_subfolder + newclassname + ".h")
+
+        #Replace the guard
+        old_guard = "MANTID_%s_%s_H_" % (subproject.upper(), classname.upper())
+        new_guard = "MANTID_%s_%s_H_" % (newproject.upper(), newclassname.upper())
+        text = text.replace(old_guard, new_guard)
+
+        # Replace the namespace declaration
+        text = text.replace("namespace " + subproject, "namespace " + newproject)
+        # Replace the conents
+        f = open(newfilename, 'w')
+        f.write(text)
+    except RuntimeError as err:
+        print err
 
 
 
@@ -57,7 +61,7 @@ def move_all(subproject, classname, newproject, newclassname, args):
 
     newheaderfile = os.path.join(newbasedir, "inc/" + new_header_folder + "/" + args.dest_subfolder + newclassname + ".h")
     newsourcefile = os.path.join(newbasedir, "src/" + args.dest_subfolder + newclassname + ".cpp")
-    newtestfile = os.path.join(newbasedir, "test/" + newclassname + "Test.h")
+    newtestfile = os.path.join(newbasedir, "test/" + args.dest_subfolder + newclassname + "Test.h")
 
     if args.header and not overwrite and os.path.exists(newheaderfile):
         print "\nError! Header file %s already exists. Use --force to overwrite.\n" % newheaderfile
diff --git a/docs/source/algorithms/Fit-v1.rst b/docs/source/algorithms/Fit-v1.rst
index 55baf7dfbf7fbf9ae2af351d8b9afc0e82a8af2a..691219743c2e8a3c20358c1cb28e1cc099dbd908 100644
--- a/docs/source/algorithms/Fit-v1.rst
+++ b/docs/source/algorithms/Fit-v1.rst
@@ -355,5 +355,5 @@ Output:
 .. categories::
 
 .. sourcelink::
- :h: Framework/CurveFitting/inc/MantidCurveFitting/Fit.h
- :cpp: Framework/CurveFitting/src/Fit.cpp
\ No newline at end of file
+ :h: Framework/CurveFitting/inc/MantidCurveFitting/Algorithms/Fit.h
+ :cpp: Framework/CurveFitting/src/Algorithms/Fit.cpp
\ No newline at end of file
diff --git a/docs/source/algorithms/TOFTOFMergeRuns-v1.rst b/docs/source/algorithms/TOFTOFMergeRuns-v1.rst
new file mode 100644
index 0000000000000000000000000000000000000000..25aec61d5f1324450adf5eb51a07564d619897ff
--- /dev/null
+++ b/docs/source/algorithms/TOFTOFMergeRuns-v1.rst
@@ -0,0 +1,150 @@
+.. algorithm::
+
+.. summary::
+
+.. alias::
+
+.. properties::
+
+Description
+-----------
+
+Merges workspaces from a given list using :ref:`algm-MergeRuns` algorithm. Sample logs are merged in the following way.
+
++---------++-------------------------------+
+| Type of || Parameter                     |
+| merging ||                               |
++=========++===============================+
+| Average || temperature                   |
++---------++-------------------------------+
+| Minimum || run_start                     |
++---------++-------------------------------+
+| Maximum || run_end                       |
++---------++-------------------------------+
+| Summed  || duration, monitor_counts      |
++---------++-------------------------------+
+| Listed  || run_number                    |
++---------++-------------------------------+
+
+Other sample logs are copied from the first workspace.
+
+**Valid input workspaces**
+
+Algorithm accepts both, matrix workspaces and groups of matrix workspaces. Valid input workspaces
+
+- must have following sample logs: *channel_width*, *chopper_ratio*, *chopper_speed*, *Ei*, *wavelength*, *full_channels*, *EPP*, *monitor_counts*, *duration*, *run_number*, *run_start*, *run_end*
+- must have identical following sample logs: *channel_width*, *chopper_ratio*, *chopper_speed*, *Ei*, *wavelength*, *full_channels*, *EPP*. Tolerance for double comparison is 0.01.
+- must have common binning for all its spectra for each input workspace.
+
+If these conditions are not fulfilled, algorithm terminates with an error message.
+
+Sample log *temperature* is optional. If it is present in some of input workspaces, mean value will be calculated. Otherwise, no *temperature* sample log will be created in the output workspace.
+
+Algorithm will produce warning if 
+- *temperature* and *run_title* sample logs are not present or different,
+- some of input workspaces have zero monitor counts.
+
+Usage
+-----
+
+**Example - Merge list of workspaces**
+
+.. testcode:: ExTOFTOFMergeRuns2ws
+
+    ws1 = LoadMLZ(Filename='TOFTOFTestdata.nxs')
+    ws2 = LoadMLZ(Filename='TOFTOFTestdata.nxs')
+
+    # change sample logs for a second workspace, not needed for real workspaces
+    lognames = 'temperature,run_start,run_end,monitor_counts,run_number'
+    logvalues = '296.15,2013-07-28T11:32:19+0053,2013-07-28T12:32:19+0053,145145,TOFTOFTestdata2'
+    AddSampleLogMultiple(ws2, lognames, logvalues)
+
+    # Input = list of workspaces
+    ws3 = TOFTOFMergeRuns('ws1,ws2')
+
+    # Temperature 
+    print "Temperature of experiment for 1st workspace (in K): ", ws1.getRun().getLogData('temperature').value
+    print "Temperature of experiment for 2nd workspace (in K): ", ws2.getRun().getLogData('temperature').value
+    print "Temperature of experiment for merged workspaces = average over workspaces (in K): ",  ws3.getRun().getLogData('temperature').value
+
+    # Duration
+    print "Duration of experiment for 1st workspace (in s): ",  ws1.getRun().getLogData('duration').value
+    print "Duration of experiment for 2nd workspace (in s): ",  ws2.getRun().getLogData('duration').value
+    print "Duration of experiment for merged workspaces = sum of all durations (in s): ",  ws3.getRun().getLogData('duration').value
+
+    # Run start 
+    print "Start of experiment for 1st workspace: ",  ws1.getRun().getLogData('run_start').value
+    print "Start of experiment for 2nd workspace: ",  ws2.getRun().getLogData('run_start').value
+    print "Start of experiment for merged workspaces = miminum of all workspaces: ",  ws3.getRun().getLogData('run_start').value
+
+    # Run end 
+    print "End of experiment for 1st workspace: ",  ws1.getRun().getLogData('run_end').value
+    print "End of experiment for 2nd workspace: ",  ws2.getRun().getLogData('run_end').value
+    print "End of experiment for merged workspaces = maximum of all workspaces: ",  ws3.getRun().getLogData('run_end').value
+    
+    # Run number 
+    print "Run number for 1st workspace: ",  ws1.getRun().getLogData('run_number').value
+    print "Run number for 2nd workspace: ",  ws2.getRun().getLogData('run_number').value
+    print "Run number for merged workspaces = list of all workspaces: ",  ws3.getRun().getLogData('run_number').value      
+ 
+    # Monitor counts
+    print "Monitor counts for 1st workspace: ",  ws1.getRun().getLogData('monitor_counts').value
+    print "Monitor counts for 2nd workspace: ",  ws2.getRun().getLogData('monitor_counts').value
+    print "Monitor counts for merged workspaces = sum over all workspaces: ",  ws3.getRun().getLogData('monitor_counts').value      
+   
+
+Output:
+
+.. testoutput:: ExTOFTOFMergeRuns2ws
+
+    Temperature of experiment for 1st workspace (in K):  294.149414
+    Temperature of experiment for 2nd workspace (in K):  296.15
+    Temperature of experiment for merged workspaces = average over workspaces (in K):  295.149707
+    Duration of experiment for 1st workspace (in s):  3601
+    Duration of experiment for 2nd workspace (in s):  3601
+    Duration of experiment for merged workspaces = sum of all durations (in s):  7202
+    Start of experiment for 1st workspace:  2013-07-28T10:32:19+0053
+    Start of experiment for 2nd workspace:  2013-07-28T11:32:19+0053
+    Start of experiment for merged workspaces = miminum of all workspaces:  2013-07-28T10:32:19+0053
+    End of experiment for 1st workspace:  2013-07-28T11:32:20+0053
+    End of experiment for 2nd workspace:  2013-07-28T12:32:19+0053
+    End of experiment for merged workspaces = maximum of all workspaces:  2013-07-28T12:32:19+0053
+    Run number for 1st workspace:  TOFTOFTestdata
+    Run number for 2nd workspace:  TOFTOFTestdata2
+    Run number for merged workspaces = list of all workspaces:  ['TOFTOFTestdata', 'TOFTOFTestdata2']
+    Monitor counts for 1st workspace:  136935
+    Monitor counts for 2nd workspace:  145145
+    Monitor counts for merged workspaces = sum over all workspaces:  282080
+
+**Example - Merge group of workspaces**
+
+.. testcode:: ExTOFTOFMergeRunsGroup
+
+    ws1 = LoadMLZ(Filename='TOFTOFTestdata.nxs')
+    ws2 = LoadMLZ(Filename='TOFTOFTestdata.nxs')
+
+    # change sample logs for a second workspace, not needed for real workspaces
+    lognames = 'temperature,run_start,run_end,monitor_counts,run_number'
+    logvalues = '296.15,2013-07-28T11:32:19+0053,2013-07-28T12:32:19+0053,145145,TOFTOFTestdata2'
+    AddSampleLogMultiple(ws2, lognames, logvalues)
+
+    group=GroupWorkspaces('ws1,ws2')
+    groupmerged=TOFTOFMergeRuns(group)
+    print "Monitor counts for 1st workspace: ",  ws1.getRun().getLogData('monitor_counts').value
+    print "Monitor counts for 2nd workspace: ",  ws2.getRun().getLogData('monitor_counts').value
+    print "Monitor counts for merged workspaces = sum over all workspaces: ",  groupmerged.getRun().getLogData('monitor_counts').value         
+
+Output:
+
+.. testoutput:: ExTOFTOFMergeRunsGroup
+
+    Monitor counts for 1st workspace:  136935
+    Monitor counts for 2nd workspace:  145145
+    Monitor counts for merged workspaces = sum over all workspaces:  282080
+
+.. categories::
+
+.. sourcelink::
+
+  
+
diff --git a/docs/source/fitfunctions/Convolution.rst b/docs/source/fitfunctions/Convolution.rst
index 4131d38a6c02f0a7699718f67a20c12abd0adb33..2d1effda494a58834752a49bd3c7ab410c77c1ce 100644
--- a/docs/source/fitfunctions/Convolution.rst
+++ b/docs/source/fitfunctions/Convolution.rst
@@ -45,5 +45,5 @@ Note that the box function is defined on interval [-5, 5]:
 .. categories::
 
 .. sourcelink::
-   :h: Framework/CurveFitting/inc/MantidCurveFitting/Convolution.h
-   :cpp: Framework/CurveFitting/src/Convolution.cpp
\ No newline at end of file
+   :h: Framework/CurveFitting/inc/MantidCurveFitting/Functions/Convolution.h
+   :cpp: Framework/CurveFitting/src/Functions/Convolution.cpp
\ No newline at end of file
diff --git a/docs/source/fitfunctions/Quadratic.rst b/docs/source/fitfunctions/Quadratic.rst
index ec969de22b9b6177cdc4299d1f9a2d8f8cfcc9c0..8ff860a418240b00e5bc2f381b9f03c666f4c98e 100644
--- a/docs/source/fitfunctions/Quadratic.rst
+++ b/docs/source/fitfunctions/Quadratic.rst
@@ -26,5 +26,5 @@ where
 .. categories::
 
 .. sourcelink::
-    :h: Framework/CurveFitting/inc/MantidCurveFitting/Quadratic.h
-    :cpp: Framework/CurveFitting/src/Quadratic.cpp
\ No newline at end of file
+    :h: Framework/CurveFitting/inc/MantidCurveFitting/Functions/Quadratic.h
+    :cpp: Framework/CurveFitting/src/Functions/Quadratic.cpp
\ No newline at end of file
diff --git a/docs/source/fitfunctions/UserFunction.rst b/docs/source/fitfunctions/UserFunction.rst
index 9cda7f413fdb76f7d3bbc3a30e82de60e69f4a32..9a8201cec132e63b0bd6cfd040011538f6b8b9b7 100644
--- a/docs/source/fitfunctions/UserFunction.rst
+++ b/docs/source/fitfunctions/UserFunction.rst
@@ -25,5 +25,5 @@ go first in UserFunction definition.
 .. categories::
 
 .. sourcelink::
-    :h: Framework/CurveFitting/inc/MantidCurveFitting/UserFunction.h
-    :cpp: Framework/CurveFitting/src/UserFunction.cpp
\ No newline at end of file
+    :h: Framework/CurveFitting/inc/MantidCurveFitting/Functions/UserFunction.h
+    :cpp: Framework/CurveFitting/src/Functions/UserFunction.cpp
\ No newline at end of file