Guided by his Victorian Bradshaw's Guide, Michael Portillo explores London's theatreland and discovers how 19th-century engineering made for spectacular theatricals. At Charing Cross, Michael learns about the ambitious building programme which saw Trafalgar Square replace streets of slums and comes face to face with George Bradshaw. At one of the busiest stops on the tube, Piccadilly Circus, Michael indulges in some retail therapy at a perfumery patronised by kings, queens and prime ministers. The Bakerloo to Oxford Circus line brings Michael to Soho and a grimmer side of Victorian London, where disease was rife.