List of episodes of the series «Secrets of the London Underground»
- Seasons count: 4
- Episodes count: 36
- Total viewing time: 1 d. 2 h. 24 m.
Release date: 7/19/2021
Holborn
- Episode number: 1
- Episode duration: 44 min.
- Episode description: Tim Dunn and Siddy Holloway explore the abandoned branch line between Holborn and Aldwych. And at Holloway Road they find out about the Tube's only spiral escalator.
Release date: 7/26/2021
North End
- Episode number: 2
- Episode duration: 44 min.
- Episode description: Visit one of London Underground’s most secret places: North End under Hampstead Heath. Abandoned before completion, the station became a Cold War bunker.
Release date: 8/2/2021
Piccadilly Circus
- Episode number: 3
- Episode duration: 44 min.
- Episode description: Explore the disused parts of Piccadilly Circus, the grandest station on the London Underground. And they also visit the long-abandoned Highgate surface station.
Release date: 8/9/2021
Euston and York Road
- Episode number: 4
- Episode duration: 44 min.
- Episode description: Explore the hidden parts of Euston, including unique features not found elsewhere and the bits set for demolition for HS2. Siddy also visits York Road station.
Release date: 8/16/2021
St Mary's, Aldgate East and Oxford Circus
- Episode number: 5
- Episode duration: 44 min.
- Episode description: Have a night-time track walk exploring long forgotten stations on the District line in Whitechapel. And they discover how sprawling Oxford Circus was first built.
Release date: 8/23/2021
Clapham South and Moorgate
- Episode number: 6
- Episode duration: 44 min.
- Episode description: Explore Clapham South deep level shelter, where thousands of Londoners slept in the war. They also visit Moorgate, and the remains of a tunnelling machine there.