While it was not selected to meet this specification, it did form the basis of the later Armstrong Whitworth Whitley aircraft.

The A.W.23 was a low-wing twin-engine monoplane, powered by two Armstrong Siddeley Tiger engines.

The wings used a novel structure, patented by Armstrong Whitworth, of a massive light alloy box-spar braced internally with steel tubes.

This structure was extremely strong but required a thick wing section, increasing drag.

[2] Owing to its unreliable Tiger engines, its delivery to the RAF for testing was delayed, with the Bombay being declared the winner of the specification.