of Harmondsworth (1947)
of Knottingley (1951)
1922 Company founded
1942 Private company (presumably as an associate of R. K. Dundas)
1946 Company made public
1946 Was a subsidiary of Miles Aircraft; it had been formed to produce a patented lock nut.[1]
1948 Acquired by W. E. Hughes and Co Ltd, including 50 percent holding in Metaplast (England) Ltd, holders of rights from a US company to make coating of plastic products with metal.
1949 Philidas production was moved to Hughes's factory at Ferrybridge[2]
1951 Name changed.
1959 Name changed - parent company, Ferrybridge Industries, became Pollard Ball and Roller Bearing Co[3]
1959 Part of Whitehouse Industries
1961 Manufacturers of ball and roller bearings.
1989 Williams Holdings sold the company (acquired as part of Pilgrim House) to B. Elliott and Co[4]