Ursula Andress as Lady Britt Dorset

Stanley Baker as Mr. Graham

David Warner as Lord Nicholas "Nick" Dorset

Patience Collier as Nanny

T. P. McKenna as Smith

David Waller as Williams

Joan Benham as Miss Welsh

Julian Orchard as Thompson

Trisha Mortimer as Janet

Anne Tirard as Miss Marsh

Johnny Briggs as Taxi Driver

Fred Griffiths as Taxi Driver

Sidney Jennings as Taxi Driver

Hugh Halliday as Cyclist

Max Faulkner as Strong Room Guard

Carleton Hobbs as Elderly Peer

Eric Longworth as House of Lords Messenger

Brian Peck as Chauffeur

Howard Lang as Bank Commissionaire

Patrick Jordan as Bank Guard

Malcolm Johns as Swiss Boy Friend

Garfield Morgan as 1st Airport Official

Derek Cox-Berg as 2nd Airport Official

Barbara Ogilvie as Woman Airport Official

Georgina Simpson as Stewardess

George Oliver as Bank Official (uncredited)