Director
William Fairchild
DIRECTOR
Stars (in credits order)
Laurence Harvey
Lieutenant Crabb, R.N.V.R.
Dawn Addams
Third Officer Jill Masters, W.R.N.S.
Michael Craig
Leading Seaman Knowles
John Clements
The Admiral
Sidney James
Chief Petty Officer Thorpe
Alec McCowen
Able Seaman Morgan
Nigel Stock
Able Seaman Fraser
Ian Whittaker
Ordinary Seaman Thomas
Arnoldo Foà
Tomolino
Gianna Maria Canale
Conchita
Massimo Serato
Forzellini
Giacomo Rossi Stuart
Rosati
Carlo Giustini
Fellini
Raymond Young
Celloni
David Lodge
Sergeant
Ewen Solon
Willowdale Captain
Brian Oulton
Holford
Howard Marion-Crawford
Wing Commander
Cyril Shaps
Miguel
Lee Montague
Miguel's Mate
John Lee
Flag Lieutenant
Terence Longdon
Lieutenant Bailey
Ian MacNaughton
Sentry outside Admiral's Office
Alan Webb
British Consul
John Moffatt
Diving Volunteer
Harold Siddons
Army Interrogation Officer
Michael Brill
Naval Interrogation Officer
Andy Alston
Spanish Policeman(uncredited)
Andrew Andreas
Italian Crewman(uncredited)
Jack Armstrong
Merchant Navy Captain(uncredited)
Jim O'Brady
Italian Seaman(uncredited)
Laurence Brooks
(uncredited)
Daniel Brown
Christopher Cooke
Minor Role(uncredited)
Arthur Dibbs
Eddie Dillon
Crewman(uncredited)
Harry Drew
Bernard Foreman
Barry Johns
Desmond Jordan
Gerry Judge
Italian Policeman(uncredited)
Murray Kash
Tattooed Sailor(uncredited)
Sydney King
Cruiser Captain(uncredited)
Edward Malin
High Ranking British Navy Officer at Conference(uncredited)
Alf Mangan
Jack May
Navy Doctor(uncredited)
Hugh Moxey
Royal Navy Captain(uncredited)
Derren Nesbitt
Officer in charge of security patrol boat(uncredited)
Fred Real
Official(uncredited)
Ernie Rice
Robert Rietty
Rosati(uncredited)(voice)
Yvonne Romain
Spanish Girl(uncredited)
Johnny Rossi
Jimmy Scott
Sleeping Seaman on Transport Plane(uncredited)
Paul Stassino
Spanish Waiter(uncredited)
Emile Stemmler
Dock Worker(uncredited)
Tom Watson
Airman(uncredited)
Peter Welch
Helmsman(uncredited)
Ron Whitwell
Jerome Willis
Navy Rating Lighting Cigarette(uncredited)