cab and legal lettering on the First London Routemaster bus RM1204 . Pictured in Trafalgar square operating London Buses heritage route 9 , en-route to Aldwych . The legal lettering reads "Firstgroup plc, Macmillan House, Paddington Station, London, W2 1TY." Date 2 August 2007 ( 2007-08-02 ) , 13:26:31 Source Crop