The Adamson was a cyclecar built by a well-known firm of transport contractors. It had a 2-cylinder Alpha engine, a 3-speed gearbox and belt drive. The underslung frame gave it a very low appearance. The postwar Adamson was much less conventional, the body virtually being two sidecars side by side, with the driver seated in the offside one. They were powered by a 1075cc 2-cylinder British Anzani engine with chain drive. A light car with a 1330cc 4-cylinder Alpha engine was also made up to 1924.