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Nuclear Weapons

Question for Ministry of Defence

UIN HL15311, tabled on 27 April 2021

To ask Her Majesty's Government what is their justification for increasing the number of nuclear warheads by 40 per cent.

Answered on

29 April 2021

We remain committed to maintaining the minimum destructive power needed to guarantee that the UK's nuclear deterrent remains credible and effective against the full range of state nuclear threats. This judgement includes an assessment of the decision making processes of future potential aggressors, and an analysis of the defensive measures that they might employ. Therefore, in recognition of the developing range of technological and doctrinal threats the UK will increase the overall nuclear weapon stockpile ceiling from no more than 225 to no more than 260 warheads, an increase of 15 per cent.