§ Mr. Wigg
asked the Minister of Supply the full cost, including development expenditure, and cost of prototypes, etc., expended on Saunders Roe Cierva W.9; Armstrong Whitworth Glider 52G; Vickers Dumbo; Avro Athena; Armstrong Whitworth AW-52; Heston A2/45; Fairey Firefly trainer; de Havilland D.H.108; Miles Marathon; Westland Welkin; Short Sturgeon; Blackburn and Gen. Aircraft GAL TT Mosquito; Hawker N7/46; Hawker P.1040; Auster A2/45; Saunders Roe SR.A.1; Vickers Nene-Viking; Vickers Seagull; Short SA/4; Hawker Hunter (60°); Blackburn and Gen. Aircraft YB-1; Handley Page HPR-2; Short SB-3; Fairey FD-1; Boulton Paul BP-120; Vickers Tay-Viscount; Handley Page HP-88; Vickers 535; de Havilland DH.110 (F4/48); Vickers 508; B. Paul BP-111/111A; Fairey Rotodyne; Bristol 173 / 173Mk.3; Firth helicopter; Blackburn YA-5; Blackburn and General Aircraft GAL-56; Blackburn and General Aircraft GAL-61; Fairey Vertical Takeoff; Fairey Stooge; Rolls-Royce RR.TMR; Bristol Buckmaster; Cierva Skeeter; Avro 707; Miles Marathon, Mark 2; Hawker P.1052; Vickers 510 Vickers Swift; DH N.14/49; Short SB.5; Short Sherpa; Vickers 525; Fairey Jet Gyrodyne; Fairey FD-2; Percival P.74; Percival Jet Provost; Short PD11, aircraft respectively; how many of each type were ordered; the dates on which orders were placed for each; how many of each type were delivered; how long they were in service; how many of each type crashed; and how many of each type are still capable of flying.
§ Mr. Erroll
The majority of the fifty-six aircraft listed in the Question were prototypes ordered for research purposes and never intended to go into service. I 109W do not consider that the work involved in collating the detailed information asked for in the last six parts of the Question would be justified. On the question of expenditure, it would be contrary to established practice to disclose the cost of individual research projects, but a rough estimate of the total airframe cost involved in the development of these types is £40 million.