Secrets of the London Underground - Season 2 - Eps 2: Waterloo & City and Mark Lane
Tim Dunn and Siddy Holloway go off and discover the hidden world of the Waterloo and City. This is the only line that is entirely underground.
About Secrets of the London Underground

Title: Secrets of the London Underground
First Air Date: 2021-07-19
Last Air Date: 2024-09-03
Status: Returning Series
Rating: 7.4/10 (from 5 votes)
Language: EN
Seasons: 4
Total Episodes: 36
Network: U&Yesterday
Genres: Documentary
Production Companies: Brown Bob Productions
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.
Cast

Tim Dunn
Self - Presenter

Sigurbjörg Alma Ingólfsdóttir
Self - Presenter