Season 1
Season 2
Episode
1
- Charing Cross and Kennington
Episode
2
- Waterloo & City and Mark Lane
Episode
3
- King William Street and Knightsbridge
Episode
4
- Brompton Road and St Pauls
Episode
5
- London Bridge and Ongar
Episode
6
- King’s Cross and Marlborough Road
Episode
7
- Elizabeth Line and Angel
Episode
8
- Quainton Road and Kingsway
Season 3
Episode
1
- Camden and Sloane Square
Episode
2
- South Kensington and Marylebone
Episode
3
- Green Park (Dover Street) and Down Street
Episode
4
- British Museum and Leinster Gardens
Episode
5
- West Ashfield and Oval
Episode
6
- Leicester Square and Hyde Park Corner
Episode
7
- Heathrow and Swiss Cottage
Episode
8
- Shepherd's Bush and Elephant & Castle
Episode
9
- Acton Works and South Acton
Episode
10
- Archway and Emergency Response Unit
Season 4
Episode
1
- Earls Court and Alperton
Episode
2
- Paddington and Tottenham Court Road
Episode
3
- Waterloo and Marble Arch
Episode
4
- South Kentish Town and London Underground Control Centre
Episode
5
- Thames Tunnel and Lambeth North
Episode
6
- Ruislip Depot and Warren Street
Episode
7
- Northumberland Park and Finsbury Park
Episode
8
- Stockwell and The DLR
Episode
9
- Gloucester Road
Episode
10
- Old Street
Secrets of the London Underground
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.
Genre: Documentary
Actors: Chris Nix, Siddy Holloway, Sigurbjörg Alma Ingólfsdóttir, Tim Dunn
Studio: Brown Bob Productions
