61 Group RAF was formed on 1 July 1940 at Aldergrove before moving on 7 July 1940 to Dunlambert Hotel, Fort William Park, Belfast.

61 (Eastern Reserve) Group within Rickmansworth, moving to RAF Kenley on 1 August 1946.

61 (Eastern) Group on 1 August 1950, on 1 January 1957 it was renamed to No.

61 (Southern Reserve) Group and was disbanded on 31 March 1959.

62 (Southern Reserve) Group RAF was operational between 15 May 1946 and 31 and 1 February 1957.