Written Question·Ministry of Defence·UIN 94528

Nuclear Weapons: Research

Tabled: 25 November 2025
Answered: 1 December 2025
Named Day

Question

Bell Ribeiro-Addy

LabourClapham and Brixton Hill

To ask the Secretary of State for Defence, whether the US Los Alamos National nuclear laboratory and Lawrence Livermore national laboratory have played a role in the research, design or development of the British Astraea nuclear warhead.

Answer

Luke Pollard
We are working with our U.S. counterparts in the U.S. Navy and National Nuclear Security Administration to ensure the UK replacement warhead remains compatible with the Trident missile. The Astraea warhead will be designed, developed, and manufactured in ...

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