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Note: This is a sub-section of English Electric Co
1919 Dick, Kerr and Co's traction activities were concentrated at Preston and continued there until 1930
1930 Tramcar, bus body, and rolling stock production stayed at Preston.
c1935 English Electric supplied equipment for the electrification of the Southern Railway system, which gave it a strong and lasting position in the traction market. The EE507 traction motor was to become almost universal across the British Rail's Southern Region.
1955 EE acquired Robert Stephenson and Hawthorns and its various subsidiary companies
1961 Acquired W. H. Dorman and Co which included W G Bagnall
1962 A new wholly-owned subsidiary was formed: English Electric Traction, to bring all its railway-related activities under one management. These included The Vulcan Foundry, Robert Stephenson and Hawthorns and W. G. Bagnall.
1969 Presumably became part of English Electric-AEI Traction