Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,706 pages of information and 232,164 images on early companies, their products and the people who designed and built them.
Zwicky Liquid Pump Co
of Belfast Road, Stock Newington.
of Slough, Bucks
1910-1970 Produced fire appliances, aircraft re-fuellers and runway sweepers etc.
1937 Pump and filter manufacturers. 
1939 See Aircraft Industry Suppliers
By 1959 was a subsidiary of G. and J. Weir Holdings Ltd