High Treason

Liam Redmond

Cmdr. Robert Brennan

André Morell

Supt. Folland

Kenneth Griffith

Jimmy Ellis

Anthony Bushell

Maj. Elliott

Mary Morris

Anna Braun

Joan Hickson

Mrs. Ellis

Anthony Nicholls

Grant Mansfield

Geoffrey Keen

Morgan Williams

John Bailey

Stringer

Patric Doonan

George Ellis

Dora Bryan

Mrs. Bowers

Stuart Lindsell

Commissioner

John Harvey

Scotland Yard Man

Charles Lloyd Pack

Percy Ward

Laurence Naismith

Reginald Gordon-Wells

Jack McNaughton

Julian Amyes

Alfie Bass

Hélène Burls

Basil Cunard

Harry Fowler

Everley Gregg

George Hilsdon

Glyn Houston

Douglas Ives

Moultrie Kelsall

Sam Kydd

Victor Maddern

Julien Mitchell

Julian Somers

Marianne Stone

John Warwick

Lockwood West

Bruce Seton

(uncredited)

Richard Shaw

Man Dining in Cafe (uncredited)

Howard Lang

Policeman Discovering Jimmy's Body (uncredited)