High Treason

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

Action Thriller Crime

Liam Redmond

(Cmdr. Robert Brennan)

André Morell

(Supt. Folland)

Kenneth Griffith

Anthony Bushell

Mary Morris

Joan Hickson

Anthony Nicholls

(Grant Mansfield)

Geoffrey Keen

(Morgan Williams)

John Bailey

Patric Doonan

Dora Bryan

Stuart Lindsell

John Harvey

(Scotland Yard Man)

Charles Lloyd Pack

Laurence Naismith

(Reginald Gordon-Wells)

Jack McNaughton

(Benson - Scotland Yard man)

Julian Amyes

Alfie Bass

(Albert Brewer (uncredited))

Hélène Burls

(Mrs Skinner (uncredited))

Basil Cunard

(Pier Superintendant (uncredited))

Harry Fowler

(Street photographer (uncredited))

Everley Gregg

(Mrs Finch-Harvey - Music Club member (uncredited))

George Hilsdon

(Detective (uncredited))

Glyn Houston

(Railway shunter (uncredited))

Douglas Ives

(Mr Mathews - Union Rep (uncredited))

Moultrie Kelsall

(Ship's Captain (uncredited))

Sam Kydd

(Sam - Printer (uncredited))

Victor Maddern

(Anarchist (uncredited))

Julien Mitchell

(Mr Philips - Union Rep (uncredited))

Julian Somers

(Scottish Police Sergeant (uncredited))

Marianne Stone

(Alfie's Mother (uncredited))

John Warwick

(Inspector Hewitt (uncredited))

Lockwood West

(Home Secretary (uncredited))

Bruce Seton

Richard Shaw

(Man Dining in Cafe (uncredited))

Howard Lang

(Policeman Discovering Jimmy's Body (uncredited))

Pauline Winter

(Miss Laurie - Music Club member (uncredited))

Jean Anderson

(Woman in street (uncredited))

Hyma Beckley

(Music Club member (uncredited))

John Boxer

(Ship's radio operator (uncredited))

Cyril Conway

(Anarchist (uncredited))

Philip Dale

(Man serving in cafe (uncredited))

Andrew Donally

(Printer's assistant (uncredited))

Victor Harrington

(Police clerk (uncredited))

Stephen Jack

(Police Inspector (uncredited))

Barry Johns

(Student exiting Tutorial College (uncredited))

Peter Jones

(Announcer at Music Club (uncredited))

Howard Lang

(Policeman (uncredited))

Frank Ling

(Telephone engineer (uncredited))

Harry Locke

(Andy - Telephone engineer (uncredited))

Richard Massingham

(Music Society member (uncredited))

Dandy Nichols

(Woman scrubbing porch step (uncredited))

Tony Quinn

(Chemistry lecturer (uncredited))

Bill Rayment

(Power station worker (uncredited))

Charles Rolfe

(Policeman at Records Office (uncredited))

Reg Thomason

(Student exiting Tutorial College (uncredited))

Joe Wadham

(Power station worker (uncredited))

Michael Ward

(Music Club member (uncredited))

John Warren

(Barman (uncredited))

Ian Wilson

(Glass collector (uncredited))