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Smart and Brown of Spennymoor and Erith, Kent.
1897 Company founded by J. G. Smart.
1902 Partnership formed with G. W. Brown.
1907 The Trader Combined Paraffin Electric Set 
1913-1917 For a list of the models and prices of Marine Motors see the 1917 Red Book under S. and B. name.
1914 Engineers, Toolmakers and General Machinists. Specialities: paraffin and petrol engines for all purposes, Smart's milling and wheel cutting attachments for the lathe, four-cycle engines and complete marine equipments using paraffin or petrol, engines for stationary purposes (petrol, paraffin or gas), S. and B. Motor Winch. 
1936 Private company.
1939 Name changed.
1961 Lighting manufacturing engineers, producing Hi-Craft fluorescent lighting and control gear. 3,700 employees.