Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 126,749 pages of information and 199,760 images on early companies, their products and the people who designed and built them.
Makers of Balfalloy, of Capital Steel Works, Sheffield.
1865 Company founded. Formerly Seebohm and Dieckstahl
1899 Became private company
WWI Became Arthur Balfour and Co as anti-German feelings increased
1937 Steel manufacturers. "Balfalloy" Steel Products. "Capital" Steel Products. "Griffin" Steel Products. 
1950 Public company floated.
1961 High grade steel manufacturers and processors and small tool makers. 
1961 Balfour and Darwins was formed by merging Arthur Balfour and Darwins Group of Sheffield. About 75 percent of the products were similar. Initially a private company, by September was publically quoted.
1967 One of the larger makers of high speed and tool steels not subject to nationalisation