Richard Attenborough as Silas

David Hemmings as Bob

Alexandra Stewart as Liz

Nicholas Pennell as Spencer

Melissa Stribling as Diana

Terence Alexander as Gee Gee Gray

Edric Connor as Awana

Clifton Jones as General Sakut

Calvin Lockhart as Ali Lin

Brian Grellis as Spider

Alan Gifford as Poster

David Healy as Jones

David Lodge as Captain (uncredited)

Roy Kinnear as Hotel Chef (uncredited)

Walter Henry as Kitchen Assistant (uncredited)