1948-1992, railway company regional authority, United Kingdom British Railways, Western Region 1948 - 1992
active 1944-1954, laboratory apparatus & instrument maker, London, England W and J George and Becker Limited 1910 - 1954
1936-c. 2005, manufacturer of electronic measuring and laboratory equipment, Croydon, England H W Wallace and Company Limited 1936 - 2005
1936-1999, plastics manufacturer (optics), London, Slough; England, British Combined Optical Industries Limited 1936 - 1999
1935-1989, manufacturer of fire & smoke detection equipment & gas cylinders, Colnbrook, England Walter Kidde Company Limited 1935 - 1989
1935-c.1981, television component and vacuum tube manufacturer, Cambridge, England Cathodeon Ltd. 1935 - 1981
1947-1990s; aircraft maintenance, manufacturer of electronic equipment; Haddenham, Buckinghamshire, England Airtech Ltd 1947 - 1999
1944; railway employee, railway engineer, railway engineering manager, railway company director Rollin, David 1944 - 2021
active 1948-1969, optical instrument maker (spectroscopes etc.), London, England Hilger and Watts Limited 1948 - 1969
active 1935-1960, aircraft component manufacturer, Lancashire, England De Havilland Propellers Limited 1935 - 1960
1948-1977, goldsmiths, assayers and photographic chemists, Hendon Johnsons of Hendon Limited 1948 - 1972