§ (excluding minor contractors and suppliers of materials)
§ Firm and Location
- Abbey Panels, Coventry, Warwickshire
- ABG SEMCA, Toulouse, France
- Bristol Aerojet, Banwell, Weston-super-Mare, Somerset
- British Aircraft Corporation, Filton, Avon
- British Filters, Marlow, Buckinghamshire
- Byfleet Machine Tools, Weybridge, Surrey
- Cameron, Bristol, Avon
- Champion Sparking Plug Co., Feltham, Middlesex
- Delaney Gallay, Cricklewood, N.W.2
- Doncasters Monk Bridge, Leeds, Yorkshire
- Dunlop Aviation Group, Coventry, Warwickshire
- Elecma, Paris, France
- Flight Refuelling, Wimborne, Dorsetshire
- Hepworth and Grandage, Leeds, Yorkshire
- Herman Smith, Luton, Bedfordshire
- Hillier and Son (Engineering), Reading, Berkshire
- Hymatic Engineering, Redditch, Worcestershire
- Kollsman Instruments, Southampton, Hampshire
- Lucas Aerospace, Birmingham, Warwickshire
- Moores (Wallisdown), Bournemouth, Hampshire
- Morfax, Mitcham, Surrey
- Normalair Garrett, Yeovil, Somerset
- Palmer Aero Products, Edgware Road, N.W.8
- Rotax (now Lucas Aerospace), Bradford, Yorkshire
- Sangamo Western Controls, Enfield, Middlesex
- Serck Heat Transfer, Birmingham, Warwickshire
- Smith (Harlow), Harlow, Essex
- Smiths Industries, Basingstoke, Hampshire
- Smiths Industries, Putney Vale, S.W.15
- Ultra Electronics. Acton, London, W.3
- Union Carbide UK, Glossop, Derbyshire
- Universal Fisher Engineering, Crawley, Sussex
- Vactrio Control Equipment, Morden, Surrey
- Vibrometer Aviation Division, Stockport, Cheshire