Richard Attenborough

Silas

David Hemmings

Bob

Alexandra Stewart

Liz

Nicholas Pennell

Spencer

Melissa Stribling

Diana

Terence Alexander

Gee Gee Gray

Edric Connor

Awana

Clifton Jones

General Sakut

Calvin Lockhart

Ali Lin

Brian Grellis

Spider

Alan Gifford

Poster

David Healy

Jones

David Lodge

Captain (uncredited)

Roy Kinnear

Hotel Chef (uncredited)

Walter Henry

Kitchen Assistant (uncredited)

Basil Dearden