Submarines: Nuclear Weapons
The question
To ask the Secretary of State for Defence, with reference to p.6 of the Strategic Defence Review, published on 2 June 2025, if he will publish a breakdown of the associated costs for the sovereign warhead programme over this Parliament; and whether he expects that programme to be completed during this Parliament.
Answered by Luke Pollard
The £15 billion to be invested in this Parliament covers a range of programmes across the nuclear warhead portfolio to support the sovereign warhead. That investment includes sustaining our current Mk4A warhead; developing Astraea, our sovereign replacement warhead programme; and modernising the associated infrastructure, which will be completed beyond the current Parliament. Updates to Parliament will be provided in the Defence Nuclear Enterprise annual report.
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