Secrets of the London Underground

St Mary's, Aldgate East and Oxford Circus (1x5)

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Tim Dunn and Siddy Holloway have a night-time adventure as they go on a late-night exploration of two of London’s least known stations: St Mary’s and the original Aldgate East, they’re only a few hundred metres apart but trains haven’t stopped at either since 1938. There’s nothing on the surface to suggest the stations exist so the only people who know about them are tube maintenance workers. St Mary’s is spooky, with fallen staircases and the intricately designed footbridges hidden high up in the tops of the running tunnel