John Quayle

as Professor Whiner

as Lord John Choat

as Sir Godfrey Nicholson

as Pendlebury

as Captain Henry Cox

as Alfred Granger

as Jackson

as Dr. Benjamin Beenyman

as Geoffrey Titchfield

as Jolyon

as Dr. Demainbray

as Mr Wilcox

as Mr. Judd

as Mr. Breeze

as Woodley

as Stevenson Davies

as Major Willoughby-Gore

as Malcolm

as Psychologist

as Mr Burt

as Elleston

as Mr. Coles

as Clive

as Groom

as Lieutenant Watson

as Cavendish

as Keith Waterfield

as Lt. Julian Goltheart

as First Policeman