# Where to watch Secrets of the London Underground (2021) in the UK

> Secrets of the London Underground (2021) is available to watch free in the UK on UKTV Play. Last verified on 16 May 2026 by ScreenSearch.

**Type:** TV series  
**Year:** 2021  
**Runtime:** 44 minutes per episode  
**TMDB rating:** 7.4/10  
**Genres:** Documentary  
**Seasons:** 4  
**Region:** United Kingdom (GB)  
**Last verified:** 16 May 2026 (2026-05-15T23:25:44.729Z)  

## 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.

## Streaming options in the United Kingdom

### Free (with ads or TV licence)

- [UKTV Play](https://www.themoviedb.org/tv/123457-secrets-of-the-london-underground/watch?locale=GB)

## Frequently asked questions

**Where can I watch Secrets of the London Underground for free in the UK?**

Secrets of the London Underground (2021) is available free (with adverts or a TV licence) on UKTV Play in the United Kingdom.

**Are all seasons of Secrets of the London Underground on the same service?**

Not always — TV licensing is sometimes negotiated season by season. ScreenSearch shows availability across all seasons on the title's page; for season-specific availability, look at the season picker inside the search dialog.

**Is Secrets of the London Underground on Netflix, Disney+ or Amazon Prime Video in the UK?**

Secrets of the London Underground is not currently included with any major UK subscription service. It may still be available to rent or buy.

**How accurate is this TV series's availability data?**

Availability is sourced from The Movie Database (TMDB), which in turn pulls from JustWatch. Listings are refreshed daily. For purchase decisions, the provider's own site is the source of truth.

## Sources

- Streaming availability: The Movie Database (TMDB), refreshed daily.
- Underlying licensing data: JustWatch.
- Canonical URL: https://www.screensearch.co.uk/watch/tv/123457/secrets-of-the-london-underground-2021
- Poster image: https://image.tmdb.org/t/p/w500/AvSPoTEjRIHneuCQxDijsTZlwVC.jpg
- JSON variant: https://www.screensearch.co.uk/watch/tv/123457/secrets-of-the-london-underground-2021.json

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Generated by [ScreenSearch](https://www.screensearch.co.uk/) — a free UK-focused tool that answers "where can I watch this in the UK?" for any film or TV show. No accounts, no signup.