Between the end of the 1962 RAC Hillclimb Championship season, in which he finished seventh in a V8-powered Cooper, and the beginning of the 1963 season, Westbury built a new hillclimbing special called the Felday-Daimler powered by a 2.5-litre Daimler V8 with a 2 inches SU carburettor and a Roots supercharger.