The Mouse was a low-wing monoplane touring aircraft, powered by a 130 hp (97 kW) de Havilland Gipsy Major piston engine. Construction was mainly of fabric-covered spruce wood frames, with some plywood-covered sections. It had folding wings, retractable main landing gear and fixed tailskid. Accommodation was for the pilot and two passengers, accessible via a sliding framed canopy, plus an additional luggage locker. The first flight of the Mouse was at Heston aerodrome on 11 September 1933, piloted by Nick Comper. In February 1934, it was assessed at A&AEEMartlesham Heath, leading to various small design changes
On 13-14 July 1934, the Mouse (registered G-ACIX) was flown by E.H. Newman in handicapped heats for the King's Cup Race at Hatfield Aerodrome in poor weather conditions. It failed to reach the final race, despite an average speed of 132.75 mph. In an already competitive market for touring aircraft, the Mouse failed to attract sales, and only the one was completed before the company ceased trading in August 1934.