Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,415 pages of information and 233,868 images on early companies, their products and the people who designed and built them.
Chronology of this group:
1953 Acquired Wrexham Motor and Electrical Engineering Co.
1954 Acquired Starting, Lighting and Ignition Services (Midlands).
1954 Acquired Auto Electric Services (Stourbridge).
1954 Lucas sold Bosch Ltd back to the German parent Bosch for the sum of £25,000.
1956 Subsidiaries included:
1957 In addition, Lucas acquired a 50 per cent, interest in Siba Electric.
1958 Acquired Cox and Co (R.W.).
1960 Acquired Harry Rawlings and Co.
1961 Manufacturers of electrical equipment and accessories for motor-cycles, aircraft, cars, and cycles, including lighting sets, dynamos, dip and switch reflectors, horns, coil ignition, batteries, magnetos, lamps, mirrors, windscreen wipers, hydraulic jacks, brakes, starters, wrenches and generators. Also manufacture fuel and combustion system equipment for gas turbine engines and oil burning equipment for marine boilers. 
1962 Acquired Gravesend Car Electrical Co.
1963 Motor Show exhibitor. Wide range of products.
1971 Reorganised the aerospace-related activities including Rotax, Lucas Gas Turbine Equipment, the former Special Products Group of English Electric Co, H. M. Hobson, Vactric and Premier Precision; formed Lucas Aerospace Ltd to integrate these activities
1972 Centenary of company. Now employed 100,000 persons with 60 manufacturing and distribution companies.
1974 Other subsidiaries included: