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UKTV has commissioned a new fourth series of Secrets of the London Underground (10x60') from Brown Bob, for its leading factual channel Yesterday and free streaming service UKTV Play, set to air later this year.


Secrets of the London Underground has quickly gained a loyal audience on Yesterday, reaching over 10.1m individuals across all series to date, and is among the top performing Yesterday titles on UKTV Play.

The new series is filming now, reuniting rail historian Tim Dunn (The Architecture The Railways Built) and Siddy Holloway from London Transport Museum, as they unearth more fascinating secrets about the Tube’s rich history.

As part of her work developing the museum’s Hidden London programme of tours, which takes the public into secret parts of the London Underground, Siddy has the keys to many locked away places that reveal fascinating details of British social and rail history.


Chris Nix, Assistant Director at London Transport Museum, will also be acting as Historical Consultant to share the fascinating stories that were unveiled from the museum’s archives.


UKTV's Helen Nightingale said, “It’s great to work with Brown Bob again, and Tim and Siddy are the perfect guides to take us underground, behind closed doors and into forgotten rail tunnels.”


UKTV's Gerald Casey said, "Yesterday’s viewers have taken to Tim and Siddy’s passion and knowledge about the London Underground's hidden past. It’s great to bring them another series, packed of course with curious facts."


Jacqueline Hewer, CCO of Brown Bob said, "The more you look, the more secrets there are to discover about the London Underground. This series promises a whole new raft of thrilling ‘Did you know…?’ moments for Yesterday viewers.”


Elizabeth McKay, Director of London Transport Museum, said, “We are thrilled to be working with UKTV again to share the stories and treasures from our museum archives with the public. There are still so many secret locations to explore on the Underground network, and we can’t wait to take viewers behind the scenes to reveal even more of its fascinating history.”


Secrets of the London Underground will air in a peak time slot in 2024 on UKTV's free-to-air Yesterday channel, with all previous series currently available to stream for free on UKTV Play.


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