diff --git a/model/configuration/customRateFuncs.f90 b/model/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/model/configuration/customRateFuncs.f90
+++ b/model/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/env_model_1/configuration/customRateFuncs.f90 b/tests/model_tests/env_model_1/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/env_model_1/configuration/customRateFuncs.f90
+++ b/tests/model_tests/env_model_1/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/env_model_2/configuration/customRateFuncs.f90 b/tests/model_tests/env_model_2/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/env_model_2/configuration/customRateFuncs.f90
+++ b/tests/model_tests/env_model_2/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/env_model_3/configuration/customRateFuncs.f90 b/tests/model_tests/env_model_3/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/env_model_3/configuration/customRateFuncs.f90
+++ b/tests/model_tests/env_model_3/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/env_model_4/configuration/customRateFuncs.f90 b/tests/model_tests/env_model_4/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/env_model_4/configuration/customRateFuncs.f90
+++ b/tests/model_tests/env_model_4/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/firstorder/configuration/customRateFuncs.f90 b/tests/model_tests/firstorder/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/firstorder/configuration/customRateFuncs.f90
+++ b/tests/model_tests/firstorder/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/secondorder/configuration/customRateFuncs.f90 b/tests/model_tests/secondorder/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/secondorder/configuration/customRateFuncs.f90
+++ b/tests/model_tests/secondorder/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/spec_model_1/configuration/customRateFuncs.f90 b/tests/model_tests/spec_model_1/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/spec_model_1/configuration/customRateFuncs.f90
+++ b/tests/model_tests/spec_model_1/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/spec_model_func/configuration/customRateFuncs.f90 b/tests/model_tests/spec_model_func/configuration/customRateFuncs.f90
index 997d344b..2c6caf6c 100644
--- a/tests/model_tests/spec_model_func/configuration/customRateFuncs.f90
+++ b/tests/model_tests/spec_model_func/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/spec_model_kpp/configuration/customRateFuncs.f90 b/tests/model_tests/spec_model_kpp/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/spec_model_kpp/configuration/customRateFuncs.f90
+++ b/tests/model_tests/spec_model_kpp/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/spec_model_stoich/configuration/customRateFuncs.f90 b/tests/model_tests/spec_model_stoich/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/spec_model_stoich/configuration/customRateFuncs.f90
+++ b/tests/model_tests/spec_model_stoich/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !
diff --git a/tests/model_tests/static/configuration/customRateFuncs.f90 b/tests/model_tests/static/configuration/customRateFuncs.f90
index 6704277c..04e30b8d 100644
--- a/tests/model_tests/static/configuration/customRateFuncs.f90
+++ b/tests/model_tests/static/configuration/customRateFuncs.f90
@@ -1,3 +1,18 @@
+! -----------------------------------------------------------------------------
+!
+! Copyright (c) 2009 - 2012 Chris Martin, Kasia Boronska, Jenny Young,
+! Peter Jimack, Mike Pilling
+!
+! Copyright (c) 2017 Sam Cox, Roberto Sommariva
+!
+! Copyright (c) 2023 Alfred Mayhew
+!
+! This file is part of the AtChem2 software package.
+!
+! This file is covered by the MIT license which can be found in the file
+! LICENSE.md at the top level of the AtChem2 distribution.
+!
+! -----------------------------------------------------------------------------
 ! ******************************************************************** !
 ! ATCHEM2 -- MODULE customRateFunctions
 !