Secrets of the London Underground - Full Series Information, Trailer & IMDb Reviews
Secrets of the London Underground Season 2 Episode 2

Episode Title: Waterloo & City
Countries:
United Kingdom,
Airing Date: May 12, 2022
Runtime:60 min
IMDb Rating:

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Tim Dunn and Siddy Holloway discover the hidden world of the Waterloo & City, the only line entirely underground. And Siddy explores abandoned Mark Lane, by the Tower of London.Also, at the Acton depot, they rifle through the London Transport Museum's collection of unscanned photos before Tim learns about the iconic Underground moquette.