UK TV · U&Yesterday
Secrets of the London Underground: all seasons, episodes and where it airs in the UK
Quick answer · UK
Secrets of the London Underground is a UK documentary series on U&Yesterday, running since 2021, with 4 seasons and 36 episodes.
Secrets of the London Underground hasn't been officially ended, but no new episodes are listed yet; the latest aired on Tuesday, September 3, 2024.
Secrets of the London Underground seasons (4 seasons, 36 episodes)
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 6 | July 19, 2021 | August 23, 2021 |
| Season 2 | 10 | May 5, 2022 | July 7, 2022 |
| Season 3 | 10 | July 4, 2023 | September 5, 2023 |
| Season 4 | 10 | July 2, 2024 | September 3, 2024 |
Original UK air dates on U&Yesterday.
Common questions
How many seasons of Secrets of the London Underground are there?
Secrets of the London Underground has 4 seasons and 36 episodes, first airing on Monday, July 19, 2021.
Is Secrets of the London Underground still on?
Secrets of the London Underground hasn't been officially ended, but no new episodes are listed yet; the latest aired on Tuesday, September 3, 2024.
What channel is Secrets of the London Underground on in the UK?
Secrets of the London Underground airs on U&Yesterday. Past episodes are often available on the broadcaster's own catch-up app.
Who stars in Secrets of the London Underground?
The main cast includes Tim Dunn, Siddy Holloway.
Source: TVmaze (CC BY-SA), retrieved October 7, 2026.