Love it or hate it there is more to the Tube than meets the eye.Why is the Victoria Line so hot? Is it really possible to go all the way round the circle line? The London Underground is the oldest, most sprawling and arguably illogical metropolitan transport system in the world. Yet it is iconic, relied upon by over a billion passengers a year and loved and despised in equal measure by Londoners. Find out everything you need to know in this witty and informative account of the social history of the Tube with journalist and novelist Andrew Martin.