| SOPWITH | Thomas ___, British aviation pioneer; founder of the Hawker Siddeley engineering group (7) |
| CRAPPER | Thomas _; British plumber (7) |
| OTWAY | Thomas ___, British dramatist l652-85 |
| GAGE | Thomas ___, British general at Bunker Hill |
| HARRIER | Aircraft developed by Hawker Siddeley in the 19605 which has the ability to take off vertically (7) |
| RAFKINLOSS | Until 2010 the main base of the Hawker Siddeley Nimrod maritime patrol aircraft, situated on the Moray Firth (3,7) |
| SUICIDE | _ doors, a feature of the Armstrong Siddeley Hurricane (7) |
| WHITLEY | Large model that Armstrong Siddeley brought out in 1949 (7) |
| DEHAVILLAND | Geoffrey --- ---, British aviation pioneer and engineer whose company built the Moth and Mosquito aircraft (2,9) |
| GEOFFREYDEHAVILLAND | British aviation pioneer and jet aircraft designer associated with warplane the Mosquito |
| GEOFFREYDE | & 11D British aviation pioneer and jet aircraft designer associated with warplane the Mosquito (8,2,9) |
| AVRO | British aviation company who also built cars briefly in the 1920s (4) |
| DOORS | Rear-hinged features of the Armstrong Siddeley Hurricane (7,5) |
| REGIME | Lippy type admits, for example, engineering group in administration (6) |
| ARMSTRONG | _ Siddeley, the maker of the Whitley (9) |
| PEDLAR | The hawker, a biker, read aloud (6) |
| IEEE | Engineering group |
| SNC | Canadian engineering group ___ Lavalin |
| FIXED | _ head coupe, the Armstrong Siddeley Typhoon, for example (5) |
| STARSAPPHIRE | Armstrong Siddeley saloon from the late Fifties (4,8) |
