Written question asked by James Cartlidge (Conservative) on Friday, 29 August 2025, in the House of Commons. It was due for an answer on Tuesday, 2 September 2025. It was answered by Luke Pollard (Labour) on Sunday, 7 September 2025 on behalf of the Ministry of Defence.

Nuclear Weapons

Question: To ask the Secretary of State for Defence, with reference to recommendation 32 of the Strategic Defence Review: Making Britain Safer: secure at home, strong abroad, published on 2 June 2025, when the first review by senior Ministers from the National Security Council (Nuclear) committee on progress on the National Endeavour for delivering the UK’s nuclear deterrent will (a) begin and (b) conclude.

Answer: The National Endeavour to maintain and renew the United Kingdom’s nuclear deterrent is a whole of Government effort. The Ministry of Defence works closely with other Government departments, including the Cabinet Office, His Majesty’s Treasury, the Ministry for Housing, Communities and Local Government and the Department for Energy Security and Net Zero, to ensure its effective delivery. The National Security Council (Nuclear) remains committed to regularly reviewing progress on the National Endeavour. It receives comprehensive updates on delivery at least twice each year, with involvement from all relevant Departments.

Secondary information