British Military Aviation in 1975

January
Following the de facto collapse of the Central Treaty Organisation (CENTO) in the aftermath of the Turkish invasion of Cyprus, the British government terminates its declaration to CENTO and redirects all resources to the North Atlantic Treaty Organisation (NATO). As a consequence, all Royal Air Force (RAF) fixed-wing aircraft were withdrawn from Cyprus during this month and redeployed to RAF Strike Command.

11 October
Following the breakdown of negotiations between Britain and Guatemala with regard to the status of the British colony of Belize, Guatemalan troops begin massing on the border between the two countries. In response, the British Army garrison was reinforced and a detachment of three Westland/Aerospatiale Puma HC1s from No.33 Squadron was flown to Belize aboard Short Belfasts of No.53 Squadron.

6-8 November
Six British Aerospace (BAe) Harrier GR1As of No.1 Squadron RAF are despatched to Belize to further strengthen the British garrison in an effort to deter any possible Guatemalan military action. Subsequently, the threat was judged to have diminished and the Harriers were dismantled and flown back to the United Kingdom during April 1976.

24 November
The 'Third Cod War'; Royal Air Force British Aerospace (BAe) Nimrod maritime patrol aircraft resumed intensive surveillance flights within the 200 mile fishing zone announced by the Icelandic Government (Operation Heliotrope). Nimrod sorties were mounted in order to fulfil three objectives: to locate British and Icelandic vessels in support of the Royal Navy, to provide a British military presence in support of United Kingdom trawlers and to demonstrate to the Icelandic Government the United Kingdom's resolve to protect British fishing interests. Nimrod patrols were subsequently supplemented by a small number of sorties flown by Handley Page Hastings T5 aircraft of No.230 Operational Conversion Unit.

26 November
The Icelandic Government announces that all airfields on Iceland were closed to British military aircraft as from this date.