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  2. Nuclear weapons of the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Nuclear_weapons_of_the...

    The British hydrogen bomb programme demonstrated Britain's ability to produce thermonuclear weapons in the Operation Grapple nuclear tests in the Pacific, and led to the amendment of the McMahon Act. Since the 1958 US–UK Mutual Defence Agreement , the US and the UK have cooperated extensively on nuclear security matters.

  3. British hydrogen bomb programme - Wikipedia

    en.wikipedia.org/wiki/British_hydrogen_bomb...

    The British hydrogen bomb programme was the ultimately successful British effort to develop hydrogen bombs between 1952 and 1958. During the early part of the Second World War, Britain had a nuclear weapons project, codenamed Tube Alloys.

  4. Operation Grapple - Wikipedia

    en.wikipedia.org/wiki/Operation_Grapple

    Operation Grapple was a set of four series of British nuclear weapons tests of early atomic bombs and hydrogen bombs carried out in 1957 and 1958 at Malden Island and Kiritimati (Christmas Island) in the Gilbert and Ellice Islands in the Pacific Ocean (modern Kiribati) as part of the British hydrogen bomb programme.

  5. United Kingdom and weapons of mass destruction - Wikipedia

    en.wikipedia.org/wiki/United_Kingdom_and_weapons...

    British nuclear weapons are designed and developed by the UK's Atomic Weapons Establishment. The United Kingdom has four Vanguard -class submarines armed with nuclear armed Trident missiles . The principle of operation is based on maintaining deterrent effect by always having at least one submarine at sea, and was designed during the Cold War ...

  6. Operation Hurricane - Wikipedia

    en.wikipedia.org/wiki/Operation_Hurricane

    The British government emphasised the importance of security, so as not to imperil its negotiations with the United States. The Australian government gave all weapon design data a classification of "Top Secret", other aspects of the test being "Classified". Nuclear weapons design was already covered by a D notice in the United Kingdom ...

  7. Thermonuclear weapon - Wikipedia

    en.wikipedia.org/wiki/Thermonuclear_weapon

    In 1954 work began at Aldermaston to develop the British fusion bomb, with Sir William Penney in charge of the project. British knowledge on how to make a thermonuclear fusion bomb was rudimentary, and at the time the United States was not exchanging any nuclear knowledge because of the Atomic Energy Act of 1946. The United Kingdom had worked ...

  8. Trident (UK nuclear programme) - Wikipedia

    en.wikipedia.org/wiki/Trident_(UK_nuclear_programme)

    Trident is the only nuclear weapon system operated by the UK since the decommissioning of tactical WE.177 free-fall bombs in 1998. NATO's military posture was relaxed after the collapse of the Soviet Union in 1991. Trident warheads have never been aimed at specific targets on an operational patrol, but await co-ordinates that can be programmed ...

  9. WE.177 - Wikipedia

    en.wikipedia.org/wiki/WE.177

    The Navy weapons were retired by 1992, and all other weapons with the RAF were retired by 1998. When it was finally withdrawn in 1998, the WE.177 had been in service longer than any other British nuclear weapon. The WE.177 was the last nuclear bomb in service with the Royal Air Force, and the last tactical nuclear weapon deployed by the UK.