The Wren was a single-engined high-wing monoplane with an empty weight of only 232 lb (105 kg).

Interest in building very light aircraft was encouraged at the time by a £500 prize offered by the Duke of Sutherland (who was the Under-Secretary of State for Air).

Another incentive was a £1,000 prize offered by the Daily Mail for the longest flight by a motor-glider with an engine of not more than 750 cc.

The Wren shared the first prize with the ANEC I when it covered 87.5 miles (140.8 km) on one Imperial gallon (4.5 litres) of fuel.

It is still airworthy and is on public display at the Shuttleworth Collection at Old Warden Aerodrome in Bedfordshire.