Ring of Spies
The film is based on the actual events of the Portland Spy Ring trial in the U.K. A disgruntled Navy Clerk is transferred to a secret research establishment and is subsequently black-mailed/paid by Czech intelligence to procure secrets for them. He seduces the secretary who controls the most secret documents, and they enjoy the fruits of their treachery until the British authorities begin to close in on them.
Top cast
Bernard LeeHenry Houghton
William SylvesterGordon Lonsdale
Margaret TyzackElizabeth Gee
David KossoffPeter Kroger
Nancy NevinsonHelen Kroger
Thorley WaltersCmdr. Winters- Gillian LewisMarjorie Shaw
- Newton BlickP.O. Meadows
Philip LathamCaptain Ray
Cyril ChamberlainAnderson- Justine LordChristina
Patrick BarrCaptain Warner
Below are the streaming services currently carrying the movie “Ring of Spies” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Ring of Spies in Canada
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Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 15 Sept 2026.