Dirk Bogarde

Nicholas Whistler

Sylva Koscina

Vlasta Simoneva

Robert Morley

Col. Cunliffe

Leo McKern

Simoneva

Roger Delgado

Josef

Derek Fowlds

Sun Bathing Man

Eric Pohlmann

Golushha

John Le Mesurier

Roger Allsop

Noel Harrison

Johnnie

John Junkin

Clerk in Opening Scene

Jill Melford

Lorna

Derek Nimmo

Fred

Richard Vernon

Roddinghead

Richard Pasco

Plakov

Alan Tilvern

Simenova's Assistant

Norman Bird

Employment Exchange Clerk

Andre Charisse

Waiter

Frank Finlay

British Embassy Porter

Harriet Medin

Hotel Receptionist

William Mervyn

Passenger on Plane

Tiberio Mitri

The Milkman

George Pravda

Pravelko

Robert Rietti

John Standing

Men's Room Attendant

Pietro Tordi

Old man at the swimming pool (uncredited)