Question to the Ministry of Defence:

To ask the Secretary of State for Defence, with reference to the policy paper entitled UK-France Joint Leaders' Declaration, published on 23rd March 2023, whether he has taken steps to increase the interoperability of (a) communication, (b) armament systems and (c) other future Combat Air systems.

The UK remains committed to exploring interoperability between the Future Combat Air Systems (FCAS) of the UK and France, which will form part of the wider combat air and multi-domain capabilities across Europe and NATO. The UK maintains a NATO-first approach to addressing interoperability. At the same time, the UK and France are working together to explore areas in which interoperability can be increased, such as communication and armaments systems. The UK and France are doing so through our military and industrial relationships, mutual sharing of technical roadmaps for missiles, and the FCAS Technology Development Cooperation mechanism, the second phase of which will focus on interoperability.