Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,107 pages of information and 233,634 images on early companies, their products and the people who designed and built them.
Maker of a design of locking nut, of Salisbury Sq, London (1916)
of Market Harborough.
1913 Vislok nuts first offered for sale.
1916 Offered a range of safety nuts which were used by a wide range of clients. Based on the coincidence of address, and the fact that the advertising was handled by Haddon Advertising it seems likely this company was part of Haddon group of companies