Anglo-Swiss Screw Co

of Trout Road, West Drayton, Middlesex.
- 1919 Became private company.
- 1937 Screws and turned repetition work. [1]
- 1956 Became public company.
- 1961 Manufacturers of precision screws and screw machine products. Contractors to Admiralty, Ministry of Aviation, Post Office, Public Boards and Authorities. 450 employees. [2]