diff --git a/inc/LauAbsKMatrixProdComp.hh b/inc/LauAbsKMatrixProdComp.hh
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+
+/*
+Copyright 2023 University of Warwick
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/*
+Laura++ package authors:
+John Back
+Paul Harrison
+Thomas Latham
+*/
+
+/*! \file LauAbsKMatrixProdComp.hh
+    \brief File containing declaration of LauAbsKMatrixProdComp class.
+*/
+
+/*! \class LauAbsKMatrixProdComp
+    \brief Abstract class for defining a component of the K-matrix production vector
+
+    Abstract class for defining a component of the K-matrix production vector
+*/
+
+#ifndef LAU_ABS_KMATRIX_PROD_COMP
+#define LAU_ABS_KMATRIX_PROD_COMP
+
+#include "LauAbsResonance.hh"
+
+class LauKMatrixPropagator;
+
+class LauAbsKMatrixProdComp : public LauAbsResonance {
+
+	public:
+		//! Constructor (for use by K-matrix components)
+		/*!
+			\param [in] compName the name of the component
+			\param [in] resPairAmpInt the number of the daughter not produced by the resonance
+			\param [in] daughters the daughter particles
+			\param [in] resSpin the spin of the final channel into which the K-matrix scatters
+		*/
+		LauAbsKMatrixProdComp(const TString& compName, const Int_t resPairAmpInt, const LauDaughters* daughters, const Int_t resSpin) :
+			LauAbsResonance{ compName, resPairAmpInt, daughters, resSpin }
+		{
+		}
+
+		//! Retrieve the propagator with which this component is associated
+		virtual const LauKMatrixPropagator* getPropagator() const = 0;
+
+ 	private:
+		ClassDef(LauAbsKMatrixProdComp, 0) // K-matrix production vector component
+
+};
+
+#endif