The expert Hidden London team from the London Transport Museum uncover the secrets of the Underground and go behind the scenes at sites across the network usually unseen by the public.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | April 2020 | June 2020 | 11 |
| Season 2 | September 2020 | January 2021 | 18 |
| Season 3 | January 2021 | August 2021 | 30 |
| Season 4 | August 2021 | December 2021 | 18 |
| Season 5 | February 2022 | July 2022 | 20 |
| Season 6 | October 2022 | December 2022 | 10 |
| Season 7 | March 2023 | April 2024 | 12 |
| Season 8 | February 2023 | January 2024 | 8 |
| Season 9 | June 2024 | July 2024 | 4 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 131 |
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