With a route mileage of just under 250 and serving 272 stations, the London Underground network carries around five million passengers a day, yet attracts little attention from enthusiasts and modellers. EVAN GREEN-HUGHES delves into the fascinating history of this unique system, much of which is normally well hidden from public view.
Above: The London Underground network is critical to the movement of passengers through the city. Passengers join a waiting Hounslow train at Piccadilly Circus in the early 1960s. John Gay/Getty Images.
