'Westminster to Bloomsbury, the Big Penn'orth', London County Council (LCC) Tramways poster, 1932. Artist: RF Fordred [Getty Images]

'Westminster to Bloomsbury in 7 Minutes via Kingsway Subway Tramway, the Big Penn'orth', London County Council (LCC) Tramways poster, 1932. Showing a tram exiting a tunnel. A shiny one penny forms the entrance to the tunnel. (Photo by Guildhall Library & Art Gallery/Heritage Images/Getty Images)

Hulton Archive Heritage Images