Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,863 pages of information and 228,791 images on early companies, their products and the people who designed and built them.
of 144 Great Portland Street, London
Produced the Ranger car
1912 Listed at 35 London Road, Leicester, Carburetter makers. 
1914 Listed as Polyrhoe Carburetters Ltd, motor car accessories, 144 Great Portland Street, W. 
1916 Listed at 35 London Road, Leicester, Carburetter makers.