The US military has been using Britain's atomic weapons factory to carry out research into its own nuclear warhead programme, according to evidence seen by the Guardian.
US defence officials said that "very valuable" warhead research has taken place at the Atomic Weapons Establishment at Aldermaston in Berkshire as part of an ongoing and secretive deal between the British and American governments.
The Ministry of Defence admitted it is working with the US on the UK's "existing nuclear warhead stockpile and the range of replacement options that might be available" but declined to give any further information.
Basically, this is tantamount to an admission that the RRW is a joint American-British project, with the Atomic Weapons Establishment providing vital assistance with research that the US weapons labs are apparently unequipped to do. This makes sense in light of the British decision to build new Trident subs--after all, the main purpose of the RRW is probably to replace the W88s on the USN's Trident II SSBMs.