Friday 3 November 2006, 19.00–20.00

Known by its logo, defined by lines on a map, the London Underground was such an audacious creation that no other city tried to copy it for forty years. Leading transport critic and author of Subterranean Railway: A Social History of the Tube (2004), Christian Wolmar talks through the history of this feat of imagination and construction.

Tate Britain  Duffield Room
Free, no bookings taken
Limited seating. Tickets available from the Rotunda Information Desk on the night from 18.00.