Secrets of the London Underground

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Secrets of the London Underground is a British factual documentary series presented by railway historian Tim Dunn and London Transport Museum's Engagement Manager Siddy Holloway, co-developer of 'Hidden London', the museum's programme of tours that gives visitors access to disused and historical parts of the network. Secrets of the London Underground was first broadcast in the United Kingdom from 19 July 2021 on Yesterday. The series explores hidden areas of the London Underground such as abandoned tunnels, secret bunkers and hidden staircases, and delves into the archives of the London Transport Museum's Acton Depot. The format of the programme generally centres around visiting two abandoned areas of the London Underground, in addition to viewing some of the Museum's collection at Acton, usually with assistant director and 'Hidden London' co-developer Chris Nix. The first programme opened with 388,300 viewers and a 2.7% share, the highest rated programme on Yesterday and the 5th most watched...

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