The main units that were stationed there were from No. 6 Group RCAF, including No 77 Sqn; No 420 Sqn; No 425 Sqn No 431 Sqn and No 434 Sqn.
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427 Squadron started as a bomber squadron formed at Croft, England on 7 November 1942 and spent its wartime entirely in England as a part of No. 6 Group RCAF, RAF Bomber Command.
During the war, Sampson was assigned to RAF No. 27 to train British and Commonwealth fighter pilots, and later assigned to station command at Allerton Park (Allerton Castle) upon the establishment of No. 6 Group RCAF (No. 6 Group RCAF).