Secrets of the London Underground is returning for a fourth series

A new fourth series of Secrets of the London Underground will be coming to Yesterday TV, and filming for the new series is underway now.

A new series of Secrets of the London Underground returns in July

Rail historian Tim Dunn and Siddy Holloway will be returning to the TV screens for a new series of Secrets of the London Underground in July.

A third series of “Secrets of the London Underground” coming soon

There's to be a third series of UKTV's Secrets of the London Underground coming to the Yesterday TV channel later this year.

Episode guide to Series Two of “Secrets of the London Underground”

Railway historian Tim Dunn once again teams up with the London Transport Museum’s Siddy Holloway to explore the history of the London Underground in their second series for Yesterday TV.

Secrets of the London Underground will return for a second TV series

A second series of the Secrets of the London Underground show has been commissioned by UKTV to be shown on the Yesterday channel next year.

Secrets of the London Underground TV series starts next week

A new TV series is starting next week that will look around the hidden parts of the London Underground.