TV show availability guide
Secrets of the London Underground
Railway historian Tim Dunn and Siddy Holloway from the London Transport Museum explore hidden areas of the London Underground that—despite being just feet away from where millions of people regularly travel—hardly anyone knows about. The pair will explore abandoned tunnels, secret bunkers and hidden staircases that have been concealed from public view for years.
2021 7.2/10 community score 4 seasons · 36 episodes Returning Series
- Documentary
Viewing market
Country-level availability
Where to watch in United States
7 platforms currently listed across all viewing options
Data checked 20 Oct 2026, 15:18 UTC
Included with subscription
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Free with ads
4Streaming providerThe Roku ChannelNo linked platform guide yetDetails unavailable Streaming providerAmazon Prime Video Free with AdsNo linked platform guide yetDetails unavailable Linked platform guideTubi TVRelated brand guideView details Streaming providerAmazon MX PlayerNo linked platform guide yetDetails unavailable
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1Streaming providerAmazon VideoNo linked platform guide yetDetails unavailable
Series schedule
Seasons and episode dates
A concise series timeline, including the latest aired episode and the next date currently listed.
- First aired
- Seasons
- 4
- Episodes
- 36
- Status
- Returning Series
Latest aired episode
S4 E10
Old Street
Aired 44 min
Explores the unusual station at Old Street. It serves both the Northern line and mainline trains, and they discover how the platforms and tunnels differ across the two different services. The station has undergone massive changes since it first opened in 1901, and there’s still plenty of evidence of its early years, if you know where to look. Tim goes through a tiny doorway to discover a hidden passage with an original fully-tiled vaulted ceiling. Siddy discovers a staircase last used in the 1920s, which still has the original sign showing the Northern Line tube stops. Siddy visits Hampstead, the deepest station below ground on the entire Underground network. Unsurprisingly, it also has the deepest lift shaft, and she gets to ride on top of the lift to see the record-breaking 55-metre shaft up close. At our Museum depot, Tim meets the first ever female driver on the Victoria line. She talks about working on the tube in the 1970s.
Next listed episode
No upcoming episode date is currently listed.
Season guide
Most recent seasons first
Season 4
10 episodes
First episode aired
Season 3
10 episodes
First episode aired
Season 2
10 episodes
First episode aired
Season 1
6 episodes
First episode aired
About these dates: Air dates describe the series schedule and may change. They do not confirm that an episode is available on the same date from the providers listed above.
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