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Hackbridge and Hewittic Electric Company, of Walton-on-Thames, makers of large capacity transformers, rectifiers and switchgear.
1906 Private company incorporated Westinghouse Cooper-Hewitt Co
1920 Name changed to Hewittic Electric Co
1946 Company formed by bringing together the transformer and rectifier and switchgear manufacturing companies of Hewittic Electric Co, the Hackbridge Electric Construction Co and the New Switchgear Construction Co .
1947 Went public.
1960 Formed Combined Electrical Manufacturers Ltd as result of merger with Switchgear and Cowans Ltd, in which this company already had a significant shareholding and one with which there was an exchange of 3 directors.
1961 Manufacturers of power and distribution transformers, mercury rectifiers, mercury vapour lamps, electrical switchgear and high power quantity lamps and overhead line switchgear.