Sherlock Holmes Society of London: London Transport Museum, Covent Garden (photo by Heather Owen)
Sherlock Holmes Society of London: Guy Marriott, Friend of the London Transport Museum (photo by Heather Owen)
Sherlock Holmes Society of London: The Metropolitan Line locomotive nameplate 'Sherlock Holmes' (photo by Heather Owen)
Sherlock Holmes Society of London: The sign-writer's art (photo by Heather Owen)
Sherlock Holmes Society of London: An early horse-drawn omnibus (photo by Heather Owen)
Sherlock Holmes Society of London: A horse-drawn double-deck omnibus (photo by Heather Owen)
Sherlock Holmes Society of London: A horse-drawn tramcar (photo by Heather Owen)
Sherlock Holmes Society of London: Baker Street is still the hub of the Metropolitan Line (photo by Heather Owen)
Sherlock Holmes Society of London: Creating the London Underground - a scale model (photo by Heather Owen)
Sherlock Holmes Society of London: Creating the London Underground - a scale model (photo by Heather Owen)
Sherlock Holmes Society of London: Travel in style on the Metropolitan Railway (photo by Heather Owen)
Sherlock Holmes Society of London: Travel in style on the Metropolitan Railway (photo by Heather Owen)
Sherlock Holmes Society of London: Safe travel for ladies on the Metropolitan Railway (photo by Heather Owen)
Sherlock Holmes Society of London: Early electric Metropolitan locomotive (photo by Heather Owen)
Sherlock Holmes Society of London: Early electric Metropolitan locomotive - 'John Hampden' (photo by Heather Owen)
Sherlock Holmes Society of London: A Metropolitan carriage in the trendy 1960s (photo by Heather Owen)
Sherlock Holmes Society of London: Guy Marriott (photo by Heather Owen)
Sherlock Holmes Society of London: Please ring for lift (photo by Heather Owen)
Sherlock Holmes Society of London: 'A third-class carriage on the Underground' (photo by Heather Owen)
Sherlock Holmes Society of London: The Baker St & Waterloo Rly became the Bakerloo Line (photo by Heather Owen)
Sherlock Holmes Society of London: A City & South London carriage (photo by Heather Owen)
Sherlock Holmes Society of London: Taxi! (photo by Heather Owen)
Sherlock Holmes Society of London: A London General omnibus (photo by Heather Owen)
Sherlock Holmes Society of London: Collecting fares from the upper deck, perhaps (photo by Heather Owen)
Sherlock Holmes Society of London: 'A Transport of Delight' (photo by Heather Owen)
Sherlock Holmes Society of London: Jonathan McCafferty & Guy Marriott pretend that 'John Hampden' is 'Sherlock Holmes' (photo by Heather Owen)
Sherlock Holmes Society of London: Probably not a dolls' house (photo by Heather Owen)
Sherlock Holmes Society of London: Queuing for refreshment - Rik Grandia at front (photo by Heather Owen)