Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,501 pages of information and 233,941 images on early companies, their products and the people who designed and built them.
of Loughton, Essex, maker of copying machines.
of 1 Central Buildings, Westminster.(1929)
of Clarence House, 4 Central Buildings, Westminster, London, SW1 (1937)
1927 Company founded.
1928 Private company.
1937 Sensitized plan-copying material manufacturers. 
1939 See Aircraft Industry Suppliers.
1942 Company made public.
1961 Manufacturers of dry developed sensitized paper, opaque and tracing cloths, photoprinting and developing machinery; office document copying equipment and materials. Also pre-sensitised litho-plate and microfilming materials and equipment. 850 employees.