Terry-Thomas
Cadogan de Vere Carlton-Browne
Peter Sellers
Prime Minister Amphibulos
Raymond Huntley
Foreign Secretary Tufton-Slade
Miles Malleson
Resident Advisor Davidson
Kynaston Reeves
Sir Arthur Carlton-Browne
Kenneth Griffith
Sir John's Assistant (uncredited)
Mario Fabrizi
Deputy Minister (uncredited)
Anthony Chinn
Dignitary at Royal Pageant
Rex Garner
Hotel Porter Removing Flowers
Dan Lester
US Delegate at UN Conference
Fred Machon
Delegate at UN Conference
Tony Spears
Delegate at UN Conference
Jim Tyson
US Delegate at UN Conference
James Ure
Delegate at UN Conference
