The Peerless was the idea of John Gordon and James Byrnes, with a prototype designed by Bernie Rodger, and production began in 1957 at Slough in Berkshire. The Peerless GT used Triumph TR3 running gear in a tubular spaceframe with de Dion rear suspension, clothed in an attractive four-seat glass-fibre body, making it a practical and fast sporting car.
A works Peerless finished 16th at the 1958 Le Mans 24 Hours and won its class. About 325 cars were built before the company ran into difficulties in 1960, and John Gordon went on to create the Gordon-Keeble.
Bernie Rodger then revived the design as the Warwick GT, built by Bernard Rodger Developments at Colnbrook, Buckinghamshire, from 1960 to 1962. The Warwick had a one-piece forward-hinged front end, a stiffer chassis and a revised dashboard, but only about 40 were built.