Pobjoy Airmotors

The Niagara's compact size and excellent performance led to it being used on the General Aircraft GAL.38 and Airspeed AS.39 extremely long-endurance slow-flying "Fleet Shadower" prototypes produced to Air Ministry specification S.23/27"[1] where they maximized airflow over the wings.

The move, and the ongoing effects of the Great Depression, drove the company into financial difficulty, and it was eventually bought outright by Shorts.

During the Second World War, Pobjoy ran a section of Rotol Airscrews of Gloucester, England, and was responsible for the design and development of an airborne generator, intended for use on the Short Shetland flying boat.

This was installed inboard on the aircraft, and due to the incorrect closure of the cooling ducts the engine overheated and the resulting fire destroyed the prototype Shetland.

On 4 July 1948, he was returning from a sales trip to Helsinki when the Scandinavian Airlines Douglas DC-6 in which he was flying was involved in the 1948 Northwood mid-air collision.