Runnymede was designed in South Africa manufactured in England from 1936 to 1954. They were either battery-powered or had a Villiers petrol engine. A petrol powered Runnymede drove across the Alps in 1947. Stanley Engineering was bought by C. B. Harper Ltd. in 1954.

R. A. Harding Company of Bath was founded in 1921. They initially produced hand-propelled tricycles. In 1926 Harding's introduced a variety of powered invalid carriages. The De Luxe models A and B were powered by a 122cc Villiers engine, and the Pultney was powered by either