John Quayle

as Dr. Benjamin Beenyman

as Professor Whiner

as Geoffrey Titchfield

as Lord John Choat

as Sir Godfrey Nicholson

as Jolyon

as Dr. Demainbray

as Mr Wilcox

as Mr. Judd

as Woodley

as Mr. Breeze

as Stevenson Davies

as Major Willoughby-Gore

as Pendlebury

as Captain Henry Cox

as Alfred Granger

as Dentist

as Vicar

as Malcolm

as Fforbes-Ffortescue

as Psychologist

as Mr Burt

as Elleston

as Clive

as Mr. Coles

as Groom

as Alex

as Captain Innes Doyle

as Lieutenant Watson

as Bunny Newbury

as Lord Bunny Newbury

as Cavendish

as Alfred Granger

as Verger

as Lt. Julian Goltheart

as Keith Waterfield

as Jackson

as First Policeman