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1951 Britain feared commies more than rationed tea — this thriller's propaganda with panache.
TMDB
57
IMDb
67
Google
84
Watch(GB)

High Treason (1951)

paranoid noirstiff upper lip espionageRed Scare cosplay

Overview

ActionThrillerCrime

Men from Scotland Yard and military intelligence build a dossier on a sabotage ring.

Flag of GBGB
Content warning
great britaincommunist saboteurs
ideological suspicionstate surveillancenational identity under threatbetrayal of trust

Standout Aspects

Production

Futuristic '51 vision of London landmarks under attack.

Acting

Kenneth Griffith's twitchy traitor steals every scene.

Best for:Solo: Rainy afternoon with your tinfoil hat collection.·Rewatch: Spot which 'foreign' accents collapse mid-sentence.
Heads up:Triggers: Heavy anti-communist paranoia that aged like milk.
R

Director

Roy Boulting

ReleasedNov 13, 1951
Runtime1h 33m
StatusReleased

Vibe

Pacesteady
Intensitymedium
Tonedark
Feelmedium
Paul Soskin Productions

Top Cast

Liam Redmond

Liam Redmond

Cmdr. Robert Brennan

André Morell

André Morell

Supt. Folland

Kenneth Griffith

Kenneth Griffith

Jimmy Ellis

Anthony Bushell

Anthony Bushell

Maj. Elliott

Mary Morris

Mary Morris

Anna Braun

Joan Hickson

Joan Hickson

Mrs. Ellis

Anthony Nicholls

Anthony Nicholls

Grant Mansfield

Geoffrey Keen

Geoffrey Keen

Morgan Williams

John Bailey

John Bailey

Stringer

Patric Doonan

Patric Doonan

George Ellis

Dora Bryan

Dora Bryan

Mrs. Bowers

John Harvey

John Harvey

Scotland Yard Man

Charles Lloyd Pack

Charles Lloyd Pack

Percy Ward

Laurence Naismith

Laurence Naismith

Reginald Gordon-Wells

Ask about High Treason

Opens AI chat

Deep Dive

Trivia, insights & behind the scenes

Cultural

Released during the Korean War, this was Britain's answer to Hollywood Red Scare thrillers — with worse budgets and better accents.

Trivia

Director Roy Boulting shot futuristic '1951 predictions' of London under attack; audiences in 1951 found them terrifyingly plausible.

Gallery

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