The London Underground is the world’s oldest underground railway. 154 years after it first opened, The Tube is carrying more passengers than ever before – with over a billion passenger journeys last year. Now, the engineer and urban explorer Rob Bell has been given special access to the secret workings of The Tube – to discover the hidden history of how this icon of London was built. And in telling this story he’s enlisting the help of men and women who know this world better than anyone – the tube staff. The London Underground drivers, customer service staff and station managers will reveal the unique and fascinating story of this subterranean world – a history they know and love. The Tube has shaped the history of London. Its breakthroughs have been adopted the world over, and changed the way cities everywhere work. Inside The Tube: Going Underground is a celebration of how a sometimes unsung marvel came to be, told by the people who know it best.