The prototype/first production aircraft, registered as G-ASKE on 10 July 1963 and transferred to XR362 on 20 December 1963. CAA records show that it was restored as G-ASKE on 14 June 1965, registered to the Minister of Aviation, and returned to XR362 on 14 July 1966. It was retired from RAF service in 1976 and stored at RAF Kemble until registered as G-BEPE on 30 March 1977 with HeavyLift Cargo. Cancelled on 1 March 1994 as destroyed after being scrapped at Southend in February 1994.