# Where to watch Submarine Alert (1943) in the UK

> Submarine Alert (1943) is available to watch free in the UK on Plex and Tubi TV. It can also be rented from Amazon Video or bought from Amazon Video. Last verified on 11 May 2026 by ScreenSearch.

**Type:** Film  
**Year:** 1943  
**Runtime:** 66 minutes  
**TMDB rating:** 4.8/10  
**Genres:** Action, Thriller, War  
**Region:** United Kingdom (GB)  
**Last verified:** 11 May 2026 (2026-05-11T01:16:55.784Z)  

## Synopsis

Nazi spies use a stolen shortwave transmitter prototype to broadcast top secret shipping info to an offshore Japanese sub. To nab the spy ring, the Government has the West Coast's top radio engineers fired and shadowed to see if the Nazis recruit them to complete work on the prototype radio. Radio engineer Lew Deerhold, a resident alien without a job to pay for his adorable little ward Gina's life-saving operation, falls prey to the spy ring, and is swept up in a maelstrom of deceit and danger.

## Streaming options in the United Kingdom

### Free (with ads or TV licence)

- [Plex](https://www.themoviedb.org/movie/80259-submarine-alert/watch?locale=GB)
- [Tubi TV](https://tubitv.com/search/Submarine%20Alert)

### Rent (typically 24-48 hours)

- [Amazon Video](https://www.amazon.co.uk/s?k=Submarine%20Alert&i=instant-video)

### Buy (digital download)

- [Amazon Video](https://www.amazon.co.uk/s?k=Submarine%20Alert&i=instant-video)

## Frequently asked questions

**Where can I watch Submarine Alert for free in the UK?**

Submarine Alert (1943) is available free (with adverts or a TV licence) on Plex and Tubi TV in the United Kingdom.

**How much does it cost to rent Submarine Alert?**

Rental prices vary by service and tier (HD vs 4K), typically £3.49 to £5.99 in the UK for a 48-hour rental. ScreenSearch links you straight to Amazon Video so you can check the current price.

**Can I buy a digital copy of Submarine Alert?**

Yes. Submarine Alert can be bought as a digital download from Amazon Video in the UK. A purchased digital copy lives in that storefront's library and stays available as long as the licence holds.

**Is Submarine Alert on Netflix, Disney+ or Amazon Prime Video in the UK?**

Submarine Alert is not currently included with any major UK subscription service. It may still be available to rent or buy.

**How accurate is this film'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/movie/80259/submarine-alert-1943
- Poster image: https://image.tmdb.org/t/p/w500/aofjS2KvnJh8ap7cE1ZWQnany9N.jpg
- JSON variant: https://www.screensearch.co.uk/watch/movie/80259/submarine-alert-1943.json

---

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.