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Tim Dunn and Siddy Holloway discover the hidden world of the Waterloo & City, the only line entirely underground. And Siddy explores abandoned Mark Lane, by the Tower of London.Also, at the Acton depot, they rifle through the London Transport Museum's collection of unscanned photos before Tim learns about the iconic Underground moquette.

How to Watch Secrets of the London Underground Season 2 Episode 2 Legally and Safely

If you want to stream Secrets of the London Underground Season 2 Episode 2 through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Secrets of the London Underground Season 2 Episode 2 films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.