Pre-production Balliols were delivered to the RAF's Central Flying School in 1950, but with the change in air-training policy, the Balliol was only delivered to one Flying Training School, – No. 7 at RAF Cottesmore, replacing their Harvards. The Balliol later served at the RAF College, Cranwell until replaced there by the de Havilland Vampire T.Mk 11 in 1956. The Balliol also saw limited squadron service from 1953 with No. 288 Squadron RAF based at RAF Middle Wallop. Operations continued until the squadron was disbanded in September 1957.