The Theseus was the Bristol Aeroplane Company's first attempt at a gas-turbine engine design, a turboprop that delivered just over 2,000hp. The engine was soon superseeded by their Proteus design with more power, and the only use of the engine was in two Handley Page Hermes conversions.

Specifications

Cycle: (unknown)
Compression ratio: (unknown)
Power: 2,220hp
Weight: (unknown)