Geoff Marshall is an English video producer, performer, and author from London who runs a YouTube channel which is predominantly transport-themed. Born in London, he spent almost four years living in the United States between 2006 and 2009, and now resides in South London. Marshall has twice held the world record for the Tube Challenge: travelling to all London Underground stations in the fastest time possible. His first record time to visit the then 275 stations was achieved with Neil Blake in 18 hours 35 minutes and 43 seconds in May 2004, on his seventh attempt. This beat the previous world record of 19 hours, 18 minutes and 45 seconds that was achieved by Jack Welsby in April 2002. More information...
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