Seasons and episodes
1Season 1 Jul. 19, 2021
1 - 1Holborn Jul. 19, 2021
1 - 2North End Jul. 26, 2021
1 - 3Piccadilly Circus Aug. 02, 2021
1 - 4Euston and York Road Aug. 09, 2021
1 - 5St Mary's, Aldgate East and Oxford Circus Aug. 16, 2021
1 - 6Clapham South and Moorgate Aug. 23, 2021
2Season 2 May. 05, 2022
2 - 1Charing Cross and Kennington May. 05, 2022
2 - 2Waterloo & City and Mark Lane May. 12, 2022
2 - 3King William Street and Knightsbridge May. 19, 2022
2 - 4Brompton Road and St Pauls May. 26, 2022
2 - 5London Bridge and Ongar Jun. 02, 2022- 2 - 6King’s Cross and Marlborough Road Jun. 09, 2022
- 2 - 7Elizabeth Line and Angel Jun. 16, 2022
- 2 - 8Quainton Road and Kingsway Jun. 23, 2022
- 2 - 9Greenwich and Notting Hill Jun. 30, 2022
- 2 - 10Baker Street and Edgware Road Signal Cabin Jul. 07, 2022
3Season 3 Jul. 04, 2023
3 - 1Camden and Sloane Square Jul. 04, 2023
3 - 2South Kensington and Marylebone Jul. 11, 2023
3 - 3Green Park (Dover Street) and Down Street Jul. 18, 2023
3 - 4British Museum and Leinster Gardens Jul. 25, 2023
3 - 5West Ashfield and Oval Aug. 01, 2023
3 - 6Leicester Square and Hyde Park Corner Aug. 08, 2023
3 - 7Heathrow and Swiss Cottage Aug. 15, 2023
3 - 8Shepherd's Bush and Elephant & Castle Aug. 22, 2023
3 - 9Acton Works and South Acton Aug. 29, 2023
3 - 10Archway and Emergency Response Unit Sep. 05, 2023
4Season 4 Jul. 02, 2024
4 - 1Earls Court and Alperton Jul. 02, 2024
4 - 2Paddington and Tottenham Court Road Jul. 09, 2024
4 - 3Waterloo and Marble Arch Jul. 16, 2024
4 - 4South Kentish Town and London Underground Control Centre Jul. 23, 2024
4 - 5Thames Tunnel and Lambeth North Jul. 30, 2024
4 - 6Ruislip Depot and Warren Street Aug. 06, 2024
4 - 7Northumberland Park and Finsbury Park Aug. 13, 2024
4 - 8Stockwell and The DLR Aug. 20, 2024
4 - 9Gloucester Road Aug. 27, 2024
4 - 10Old Street Sep. 03, 2024
Synopsis
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.
Original title Secrets of the London Underground
First air date Jul. 19, 2021
Last air date Sep. 03, 2024
Average Duration 44 minutes
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