[1] Following on from previous designs of London taxi, the FX3 had a traditional 3-door body, with an open luggage platform rather than a front passenger seat beside the driver.

The FX3 was fitted with mechanical brakes with rod operation, beam axles on leaf springs and a built-in Jackall hydraulic jacking system.

Outside London, cab operators in major UK cities like Manchester, Birmingham, Glasgow and Liverpool ran FX3s, either bought new or when they were retired from service in the capital.

Examples of four-door FX3s were known to run in Manchester, where, in common with every other UK local authority outside London [5] different taxi licensing regulations were enforced.

A Hire Car version, the FL1 was also made, which had four full doors, a bench front seat, column gear-change and an umbrella-type handbrake handle.

A number of hearse bodies were also mounted on FL1 chassis by such coachbuilders as Simpson and Slater, Alpe and Saunders, Arthur Mulliner and Woodall Nicholson.

Built by London coachbuilders FLM Panelcraft, it was an open-drive town car, with carriage lamps and wickerwork decoration on the body sides.