Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,860 pages of information and 228,791 images on early companies, their products and the people who designed and built them.
Makers of pistons, clips, etc of Twickenham, Middlesex
1929 Incorporated as a private company.
1937 Manufacturers of aluminium pistons and non-ferrous die and sand castings. "BHB" Self-adjusting Pistons. "Motif" Die and Sand Castings. "Seeger" Retaining Rings. 
1949 Subsidiaries were:
1961 Piston and circlip manufacturers. 535 employees.