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.
Full story: http://www.guardian.co.uk/world/2009/feb/09/us-uk-atomic-weapons-nuclear-power