Founding Member Companies
| Sir WG Armstrong Whitworth Aircraft Ltd | Armstrong Siddeley Motors Ltd |
| Blackburn & General Aircraft Ltd | Boulton Paul Aircraft Ltd |
| Bristol Aeroplane Co. Ltd | Folland Aircraft Ltd |
| Gloster Aircraft Ltd | Handley Page Ltd |
| Hawker Aircraft Ltd | A.V. Roe & Co. Ltd |
| Rolls-Royce Ltd | Saunders-Roe Ltd |
| Vickers-Armstrong (Aircraft) Ltd | Westland Aircraft Ltd |
