Wednesday, January 05, 2022

UK Deployed 31 Nuclear Weapons During Falklands War

British warships in 1982 were armed with dozens of nuclear depth charges in a nuclear-free zone in Latin America, Richard Norton-Taylor reports.


Argentinian soldiers and Falklanders in 1982. (Wikimedia Commons)

By Richard Norton-Taylor
Declassified UK
January 5, 2022

The revelation is contained in a new file released to the National Archives. Marked “Top Secret Atomic,” it shows that the presence of the nuclear weapons caused panic among officials in London when they realized the damage, both physical and political, they could have caused.

The military regime in Argentina claimed the Falkland islands and invaded on April 2, 1982. The U.K. government under Margaret Thatcher dispatched a naval task force to the South Atlantic to retake the islands.

A Ministry of Defence (MoD) minute, dated April 6, 1982, referred to “huge concern” that some of the “nuclear depth bombs” could be “lost or damaged and the fact become public.” The minute added: “The international repercussions of such an incident could be very damaging.”

Nuclear depth bombs are deployed from navy ships to attack submerged submarines.

The unidentified official who wrote the minute continued:

“The secretary of state [John Nott] will wish to continue the long-established practice of refusing to comment on the presence or absence of UK nuclear weapons at any given location at any particular time.”

Heated Row


The existence of the weapons provoked a heated row between the MoD and the Foreign Office. The latter asked the MoD to “unship” the weapons. The Navy refused to do so.

The MoD noted the principal arguments in favour of keeping the weapons on board. It stated:

“In the event of tension or hostilities between ourselves and the Soviet Union concurrent with Operation Corporate [the codename given to liberating the Falklands] the military capability of our warships would otherwise be severely reduced.”

One document in the file says there was no risk of an “atomic bomb type explosion.” But there was a threat of the “disposal of fissile material” if any of the weapons was damaged which could lead to up to 50 “additional deaths” from cancer.

Even if there was no pollution in the event of a damaged or sunk nuclear weapon the Argentinians might get hold of nuclear technology and “we might have had to face acute embarrassment in the non-proliferation field,” recorded a MoD official.

Keeping Secret


August 1981: A British Harrier jet takes off from the Royal Navy aircraft carrier HMS Invincible during fleet exercise in Norfolk, Virginia. (U.S. Navy)

A plan to offload the weapons at the British base on Ascension Island in the South Atlantic Ocean was rejected by the Navy. It said this would delay the passage of the task force to the Falklands and that the operation would not be kept secret.

Instead, the weapons were transferred from the frigates and destroyers to the larger aircraft carriers, HMS Hermes and HMS Invincible, where the weapons could be better protected. Prince Andrew served as a helicopter pilot on Invincible during the war.

By the middle of May 1982, the Hermes had 18 nuclear weapons on board and Invincible 12, while the Royal Fleet Auxiliary ship, Regent, had one, according to the file. The ships were within the “total exclusion zone” imposed by Britain around the Falkland Islands, the documents say.

The file does not say whether any of these were “inert” surveillance rounds used to monitor the “wear and tear on the weapons”, as academic Lawrence Freedman put it in his Official History of the Falklands Campaign, published in 2005.

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