Secrets of the London Underground - Season 1 Episode 4 -

Tim and Siddy explore the hidden parts of Euston underground station - and there’s a lot to see, including some features not found anywhere else on the London Underground.The tunnels were abandoned in the 1960s and this place is a time capsule of that period, with brightly coloured posters stuck to the walls. Euston is an excellent example of how the network has adapted over time.