Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,850 pages of information and 228,791 images on early companies, their products and the people who designed and built them.
Polygon Engineering Works, 65A, Old Town, Clapham, S.W.
1904 Leslie Haywood Hounsfield founded the business
1913 Made his first car
1914 Leslie Hounsfield moved his business to Vicarage Road, Croydon where a second prototype car was built. The business was renamed Trojan in 1914 but Hounsfield lacked the capital to start production.