Secrets of the London Underground: Season 4
This season started on July 2, 2024. The table lists episodes with recorded air dates up to September 28, 2026.
| Ep | Title and air date | My place |
|---|---|---|
| 1 | Earls Court and Alperton · 44 min | |
| 2 | Paddington and Tottenham Court Road · 44 min | |
| 3 | Waterloo and Marble Arch · 44 min | |
| 4 | South Kentish Town and London Underground Control Centre · 44 min | |
| 5 | Thames Tunnel and Lambeth North · 44 min | |
| 6 | Ruislip Depot and Warren Street · 44 min | |
| 7 | Northumberland Park and Finsbury Park · 44 min | |
| 8 | Stockwell and The DLR · 44 min | |
| 9 | Gloucester Road · 44 min | |
| 10 | Old Street · 44 min |
