Carlton-Browne of the F.O.

Terry-Thomas

Cadogan de Vere Carlton-Browne

Peter Sellers

Prime Minister Amphibulos

Luciana Paluzzi

Princess Ilyena

Ian Bannen

Young King Loris

Thorley Walters

Colonel Bellingham

Raymond Huntley

Foreign Secretary Tufton-Slade

Miles Malleson

Resident Advisor Davidson

John Le Mesurier

Grand Duke Alexis

Marie Lohr

Lady Carlton-Browne

Kynaston Reeves

Sir Arthur Carlton-Browne

Ronald Adam

Sir John Farthing

John Van Eyssen

Hewitt

Nicholas Parsons

Rodgers

Irene Handl

Mrs. Carter

Harry Locke

Gaillardian commentator

Basil Dignam

Security Officer

Sam Kydd

Signaller

Robert Bruce

Major Miller

John Glyn-Jones

Newsreel Interviewer

Marianne Stone

Woman In Cinema

Margaret Lacey

Onlooker

Robert S. Young

Archivist

Kenneth Griffith

Sir John's Assistant (uncredited)

Mario Fabrizi

Deputy Minister (uncredited)