HMS Invincible (R05) is a Royal Navy Anti-Submarine Warfare Carrier, the lead ship of three in her class. She was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering. She was laid down in 1973, and launched on 3 May 1977. The ship was commissioned on 11 July 1980.
On 25 February 1982 the Australian government announced that it had agreed to purchase HMS Invincible after several months of negotiations. The sale was confirmed by the Ministry of Defence. However, on 2 April 1982 Argentina invaded the Falkland Islands. On 5 April 1982 a British naval task force including HMS Invincible left Portsmouth bound for the South Atlantic. On 1 June, Australian Prime Minister Malcolm Fraser advised the British Government that the sale of Invincible to Australia could be cancelled if desired. In July 1982 the British Ministry of Defence announced that it had withdrawn its offer to sell Invincible and that it would maintain a three-carrier force.
On 6 June 2005 the Ministry of Defence announced that HMS Invincible would be inactive until 2010, available for reactivation on 18 months notice. She was decommissioned on 3 August 2005. The Royal Navy maintain that Invincible can be deployed should the need arise and that navy policy assumes that it is still an active aircraft carrier.