| SUICIDE | _ doors, a feature of the Armstrong Siddeley Hurricane (7) |
| DOORS | Rear-hinged features of the Armstrong Siddeley Hurricane (7,5) |
| LANCASTER | Basis for the Armstrong Siddeley Hurricane (9) |
| GULLWING | _ doors, a feature of the Mercedes-Benz 300 SL coupe (8) |
| BUTTERFLY | _ doors, a feature of the Mclaren F1 (9) |
| SLIDING | _ doors, a rear-entry feature of the Fiat Ulysse (7) |
| WHITLEY | Large model that Armstrong Siddeley brought out in 1949 (7) |
| FOUR | The Armstrong Siddeley Star Sapphire was equipped with such a size engine (4-5) |
| LITRE | The Armstrong Siddeley Star Sapphire was equipped with such a size engine (4-5) |
| SCISSOR | _ doors, distinctive feature of Lamborghini's Countach (7) |
| SOPWITH | Sir Thomas, British aircraft designer who was the chairman of the Hawker Siddeley Group from 1935-63 (7) |
| FLAP | A motion or sound of a flag, sail or a bird's wing; a hinged leaf of a table; a pet door; a loose pendant part of an envelope or a tent, for example; a large broad mushroom; or, a fluster/tizz (4) |
| FIXED | _ head coupe, the Armstrong Siddeley Typhoon, for example (5) |
| STRAIGHT | _ six, the Armstrong Siddeley Star Sapphire's engine (8) |
| LOUVRED | Like some doors a museum has fitted at last |
| HARRIER | Aircraft developed by Hawker Siddeley in the 19605 which has the ability to take off vertically (7) |
| DELIVER | Bring to the door, ... a parcel |
| DIHEDRAL | _ doors, a distinctive feature of the Toyota Sera (8) |
| PANEL | A saddlecloth; a slip of parchment listing jurors' names, hence a jury; a compartment of a door; a board for an oil painting; or, a section of a fence (5) |
| SLAM | Loud crash of a door; a forceful dunk of a basketball; the winning by one team of all 13 tricks in a hand in whist; or, a poetry contest (4) |
