High Treason

Benita Hume

Evelyn Seymour

Basil Gill

President of Europe

Humberston Wright

Dr. Seymour

Jameson Thomas

Michael Deane

Edith Barker Bennett

(uncredited)

James Carew

(uncredited)

Alf Goddard

(uncredited)

Judd Green

(uncredited)

Clifford Heatherley

(uncredited)

Hayford Hobbs

(uncredited)

Raymond Massey

(uncredited)

Wally Patch

(uncredited)

Rène Ray

(uncredited)

Irene Rooke

(uncredited)

Milton Rosmer

(uncredited)

John Singer

(uncredited)

Kiyoshi Takase

(uncredited)

Henry Vibart

(uncredited)