The Waco CSO-A (shown) and CTO-A light fighters were both modifications of two-seat trainers. Hopes of using CSO-As in the fighting role in Brazil were unfulfilled.

The Waco CSO-A and CTO-A (shown) light fighters were both modifications of two-seat trainers.

The attractive little Wagtail fighter, to RFC specifications, was blighted by the unreliability of its ABC Wasp engine.

First flown in 1941, the WM-23 Ezustnyil owed much to the design of the Heinkel He 112.

The Westland N16, in the form in which it was first flown with short floats of Sopwith design.

Second of the Westland N.1B Scout floatplanes, the N17 was used to evaluate long Westland floats that obviated the need for a tail float.

The Westland N16, in the form in which it was first flown with short floats of Sopwith design.