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Note: Possibly two concerns here
of Cambridge Circus, Charing Cross
of 228 Brixton Hill, London
PDC were motorcycles sold by the Imperial Motor Co , from 1903 to 1905.
The firm offered a range of solos plus a forecar attachment. Engine sizes were 2hp, 2.5hp, 2.75hp and 3hp. The front brake was an external-contracting band. In all other respects it was a primitive that was typical of the era, and so it did not last long on the market.
1905 Listed as Imperial Motor Co., 228, Brixton Hill, Streatham. Manager is W. R. Thomas