Abbotsinch. The final example was delivered during December 1954. The last remaining active Sea Balliols stationed at Abbotsinch with withdrawn around September 1963. In addition to its primary use as a trainer aircraft, several Balliols were operated for other purposes, including as test aircraft. In this capacity, one aircraft participated in the flight testing of radar absorbent coatings. The majority of Balliols were delivered to the domestic military services, however export arrangements were also sought out by the manufacturer. The Royal Ceylon Air Force were ultimately be the only export customer for the type, opting to procure a batch of 12 Balliol Mk.2s for its training purposes; of these, seven were drawn from cancelled contracts for the RAF and the remainder from RAF reserves, the latter being replaced by a further five production aircraft. Variants P.108 Balliol T.Mk 1 Prototypes, three built. Powered by the Armstrong Siddeley Mamba turboprop engine. Balliol T.Mk 2 Two-seat advanced training aircraft for the RAF; 196 built (166 built by Boulton Paul, and 30 built by Blackburn Aircraft). Sea Balliol T.Mk 21 Two-seat advanced training aircraft for the FAA. A total of 30 built by Boulton Paul. Operators Royal Ceylon Air Force Aeroplane and Armament Experimental Establishment Empire Test Pilot's School Royal Air Force No. 288 Squadron at Middle Wallop No. 228 Operational Conversion Unit at RAF Leeming No. 233 Operational Conversion Unit at RAF Pembrey No. 238 Operational Conversion Unit at RAF Colerne No. 2 Flying Training School, RAF Ternhill No. 6 Flying Training School, RAF Ternhill No. 7 Flying Training School at RAF Cottesmore No. 3/4 Civilian Anti-Aircraft Co-operation Unit at Exeter Airport Central Flying School Central Gunnery School RAF College Cranwell Royal Navy, Fleet Air Arm 702 Naval Air Squadron 703 Naval Air Squadron 727 Naval Air Squadron 765 Naval Air Squadron 781 Naval Air Squadron 796 Naval Air Squadron 1831 Naval Air Squadron (Royal Naval Volunteer Reserve) 1832 Naval Air Squadron (Royal Naval Volunteer Reserve) 1834 Naval Air Squadron (Royal Naval Volunteer Reserve) 1840 Naval Air Squadron (Royal Naval Volunteer Reserve) 1844 Naval Air Squadron (Royal Naval Volunteer Reserve) Survivors Sri Lanka On display Balliol T2 CA310 is on static display on the parade ground at SLAF Ground Combat Training Unit at Diyatalawa. Stored or under restoration Balliol T2 CA303 is in storage at the Sri Lankan Air Force Museum, Ratmalana Air Base. United Kingdom On display Sea Balliol T21 WL732