To ask the Secretary of State for Defence, what assessment he has made of the required lethality for the proposed Mark 7 nuclear warhead.
2 March 2020
The Mk7 aeroshell is planned to be common to both the UK replacement warhead and the US W93. The Government is confident that the UK's replacement warhead will continue to deliver an effective, independent, minimum, credible deterrent. We are withholding information about the effectiveness of the UK replacement warhead for the purposes of safeguarding national security.