Cadogan de Vere Carlton-Browne

Terry-Thomas

Señor Amphibulos

Peter Sellers

Princess Ilyena

Luciana Paoluzzi

Princess Ilyena

Luciana Paluzzi

Colonel Bellingham

Thorley Walters

Young King Loris

Ian Bannen

Foreign Secretary Tufton-Slade

Raymond Huntley

British Resident

Miles Malleson

Grand Duke

John Le Mesurier

Lady Carlton-Browne

Marie Lohr

Sir Arthur Carlton-Browne

Kynaston Reeves

Archipelagos

Marne Maitland

Sir John Farthing

Ronald Adam

Hewitt

John Van Eyssen

Rodgers

Nicholas Parsons

Mrs. Carter

Irene Handl

Security Officer

Basil Dignam

Gaillardian commentator

Harry Locke

Signaller

Sam Kydd

Hotel Receptionist

Michael Ward

Major Miller

Robert Bruce

Newsreel Interviewer

John Glyn-Jones

Woman In Cinema

Marianne Stone

Onlooker

Margaret Lacey

Admiral

James Dyrenforth

Archivist

Robert S. Young

Sir John's Assistant (uncredited)

Kenneth Griffith

Deputy Minister (uncredited)

Mario Fabrizi

Dancer

Kathryn Keeton

Dancer

Katherine Keeton

Maître d'

Bruno Barnabe

Waiter

Max Brimmell

King Loris' Equerry

Nicholas Bruce

Russian Minister

Andre Charisse

First Russian Scientist

Alexis Chesnakov

Dignitary at Royal Pageant

Anthony Chinn

First Official

Maurice Colbourne

Hotel Porter Removing Flowers

Rex Garner

Fiona Davie

John Drake

Security Man at Ministry

George Holdcroft

Dancer

Julie Hopkins

US Delegate at UN Conference

Dan Lester

Delegate at UN Conference

Fred Machon

Harold Kasket

Delegate

Alf Mangan

Kaplan Kaye

Child

Mark Mileham

British Soldier

Patrick Mynhardt

Commandos Captain

Michael Partridge

Official

Anthony Pendrell

BBC Newsreader

Frank Phillips

Italian Guard

Geremy Phillips

Second Russian Scientist

Bill Rayment

Delegate at UN Conference

Tony Spears

Civil Servant

Guy Standeven

Secretary General

Austin Trevor

US Delegate at UN Conference

Jim Tyson

Delegate at UN Conference

James Ure

Onlooker

Ian Wilson