Many will know the All the Stations duo, Geoff and Vicki, from their YouTube videos of their adventures on the British Railways. But well over 100,000 follow Geoff alone for his videos and insights into the London Underground. For the first time Geoff is taking his unique knowledge of the tube system and his nicely nerdish humour and is directing it at the younger section of his fans for a brilliantly fun and fascinating book about London's Underground network. Within each enthusiastic diversion lies fact, history and insight into the extraordinary transport, engineering and social phenomenon that is the London Underground.