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)

Katherine Keeton

Dancer

Bruno Barnabe

Maître d'

Max Brimmell

Waiter

Nicholas Bruce

King Loris' Equerry

Andre Charisse

Russian Minister

Alexis Chesnakov

First Russian Scientist

Anthony Chinn

Dignitary at Royal Pageant

Maurice Colbourne

First Official

Fiona Davie

John Drake

James Dyrenforth

Admiral

Rex Garner

Hotel Porter Removing Flowers

George Holdcroft

Security Man at Ministry

Julie Hopkins

Dancer

Harold Kasket

Kaplan Kaye

Dan Lester

US Delegate at UN Conference

Fred Machon

Delegate at UN Conference

Marne Maitland

Archipolagos

Alf Mangan

Delegate

Mark Mileham

Child

Patrick Mynhardt

British Soldier

Michael Partridge

Commandos Captain

Anthony Pendrell

Official

Frank Phillips

BBC Newsreader

Geremy Phillips

Italian Guard

Bill Rayment

Second Russian Scientist

Tony Spears

Delegate at UN Conference

Guy Standeven

Civil Servant

Austin Trevor

Secretary General

Jim Tyson

US Delegate at UN Conference

James Ure

Delegate at UN Conference

Ian Wilson

Onlooker

Michael Ward

Hotel Manager