UK DEPLOYED 31 NUCLEAR WEAPONS DURING FALKLANDS WAR
British warships deployed to the South Atlantic after Argentina’s invasion of the Falkland Islands in 1982 were armed with dozens of nuclear depth charges. Prince Andrew served on HMS Invincible, which carried 12 nuclear weapons.
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 realised the damage, both physical and political, they could have caused.
The military regime in Argentina claimed the Falkland islands and invaded on 2 April 1982. The UK government under Margaret Thatcher dispatched a naval task force to the South Atlantic to retake the islands.
A Ministry of Defence (MoD) minute, dated 6 April 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”.
“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.
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Keeping secret
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.
Surveillance and training rounds were used to test the depth charges to see how they would perform. They were identical to live weapons except the fissile material was replaced by depleted uranium and inert substances.
But even the presence of inert rounds caused alarm in the Foreign Office. Its top official, Sir Antony Ackland, wrote to Sir Frank Cooper, his opposite number in the MoD: “I was very glad to have your confirmation that HMS Sheffield was not carrying an inert round when she was hit”.
The destroyer sank on 10 May 1982 after being attacked by an Argentinian Exocet missile six days earlier.
Nuclear free zone
The Foreign Office was also anxious about the presence of the nuclear weapons because of the 1967 Treaty of Tlatelolco. This established a nuclear free zone in Latin America and surrounding waters, including the Falklands.
Although Britain had signed and ratified the treaty’s protocols other countries, including Argentina, had not done so. According to Freedman, Margaret Thatcher insisted that no ship carrying nuclear weapons would enter the three-mile territorial waters around the Falklands which would be a “potential breach” of the Tlatelolco treaty.
The MoD admitted in 2003 that British ships in the task force carried nuclear weapons and that a weapon container had been damaged. But the number of weapons had not been revealed before this document was transferred to the National Archives in Kew, south west London.
But a number of documents from the file have been weeded by the MoD or the Cabinet Office. They include an intriguing note, dated 11 April 1982, beginning “The Chiefs of Staff believe…” What they believed we are not allowed to know.
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What is the government hiding on Gibraltar?
Many more documents are missing from a separate file, now declassified, entitled “Gibraltar: Impact of the Falklands Crisis”.
Gibraltarians, like the Falkland Islanders, inhabited a British “Overseas Territory” and were concerned because Spain supported Argentine claims of sovereignty over the islands just as it claimed Gibraltar, the large rock and British base on the southern tip of the Iberian peninsula.
Whitehall weeders have withheld no fewer than 73 documents from the Gibraltar file. They have done so under exemptions in the Freedom of Information Act, and, specifically, sections 27(i), 40 (2), and 41.
These cover information whose disclosure might “prejudice” the interest of the UK abroad, “personal data”, and “information provided in confidence”. Passages in other documents in the file have also been excised.
What has the British government to hide? Documents declassified previously may offer some clues. Margaret Thatcher repeatedly expressed concern about the implications of the Falklands crisis for Gibraltar.
Despite the public rhetoric, successive UK governments have been prepared to negotiate about sovereignty of the Falklands and sought a joint sovereignty agreement with Spain over Gibraltar in 2000 and again in 2002.
Thatcher’s government secretly offered to hand over sovereignty of the Falklands islands two years before the invasion by Argentine forces in 1982. The cabinet’s defence committee approved a plan whereby Britain would hand Argentina titular sovereignty over the islands, which would then be leased back by Britain for 99 years.
Lord Carrington resigned as foreign secretary over the Argentine invasion of the Falklands. He told the subsequent Franks Committee, which inquired into the run-up to the invasion, that British policy had been one of neglect and hoping for the best. “We did not have any cards in our hands”, he said.
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