Recent research has revealed new facts about the British nuclear arsenal over a 25-year period starting in 1953. This accounting and the authors’ own research support an estimate that the British produced about 1,250 nuclear warheads between 1953 and 2013. From a peak of about 500 warheads in the period between 1974 and 1981, the UK arsenal has now been reduced to some 225 weapons.
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