Secrets of the London Underground

British Museum and Leinster Gardens (3x4)

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Tim and Siddy embark on a night-time track walk to the abandoned station of British Museum. The pair discover 1930s hand-painted adverts and white tiling. During the second world war it served as a shelter and spine-tingling clues to the children who stayed there during The Blitz can still be seen. Siddy also visits the houses of Leinster Gardens.