Beneath the UK's busiest railway station is a labyrinth of arches and alleyways dating back to 1848. On its 175th anniversary, the BBC has ventured underneath London Waterloo to have a look around.

Map of the Metropolitan Railway in 1920, showing the station at Mark Lane (Image ... The Baker Street and Waterloo Railway opened in 1906 (Image: TfL Corporate Archives) Big changes came to the London ...

Commuters look set for a relatively trouble-free start to the week with few problems being reported on the Tube early on ...