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Tim Dunn and Siddy Holloway get incredible access to the maintenance depot at Northumberland Park in north London, responsible for looking after the entire fleet of Victoria Line trains. Tim meets the team checking all the carriages, and sees the incredible precision needed to finely shave the metal wheels to keep them running smoothly on the tracks. Siddy climbs the 1960s control tower and finds a vintage control panel still in working order, directing the points on the track to make sure each Victoria Line train coming into the depot goes to the right place.Tim and Siddy get to ride on the private service that links the depot with Seven Sisters station - alighting at its mysterious third platform.At Finsbury Park station on the Victoria and Piccadilly lines, Siddy does a night-time track walk to access the now-disused tunnel which was part of an early experiment to run large electric mainline trains on the tube.At the London Transport Museum in Covent Garden, Tim meets museum's CEO to hear about the importance of design across the tube network, and they look at the bespoke designs for seating fabric across different underground lines.

How to Watch Secrets of the London Underground Season 4 Episode 7 Legally and Safely

If you want to stream Secrets of the London Underground Season 4 Episode 7 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 4 Episode 7 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.