| Stuart Whitman |
Orvil Newton |
| Sarah Miles |
Patricia Rawnsley |
| James Fox |
Richard Mays |
| Alberto Sordi |
Count Emilio Ponticelli |
| Robert Morley |
Lord Rawnsley |
| Gert Fröbe (as Gert Frobe) |
Count Manfred Von Holstein |
| Jean-Pierre Cassel |
Pierre Dubois |
| Irina Demick |
Brigitte |
| Irina Demick |
Ingrid |
| Irina Demick |
Marlene |
| Irina Demick |
Francoise |
| Irina Demick |
Yvette |
| Irina Demick |
Betty |
| Eric Sykes |
Courtney |
| Terry-Thomas |
Sir Percy Ware-Armitage |
| Red Skelton |
The Neanderthal Man |
| Yujiro Ishihara |
Yamamoto |
| Benny Hill |
Fire Chief Perkins |
| Flora Robson |
Mother Superior |
| Karl Michael Vogler |
Captain Rumplestrosse |
| Sam Wanamaker |
George Gruber |
| Tony Hancock |
Harry Popperwell |
| Eric Barker |
French Postman |
| Maurice Denham |
Trawler Skipper |
| Fred Emney |
Willie, Old Colonel |
| Gordon Jackson |
McDougal |
| Davy Kaye |
Jean, Dubois's Mechanic |
| John Le Mesurier |
French Painter |
| Jeremy Lloyd |
Lieutenant Parsons of the R.N. |
| Zena Marshall |
Sophia Ponticelli |
| Millicent Martin |
Airline Hostess |
| Eric Pohlmann (as Eric Pohlman) |
Italian Mayor |
| Marjorie Rhodes |
Waitress in Old Mill Cafe |
| Norman Rossington |
Assistant Fire Chief |
| William Rushton |
Gascoyne Tremayne |
| Graham Stark |
Third Fireman |
| Jimmy Thompson |
Photographer in Old Mill Cafe |
| Michael Trubshawe |
Niven, Lord Rawnsley's Friend |
| Gerald Campion |
Second Fireman |
| Robin Chapman |
Claude |
| Ferdy Mayne |
French Official |
| Bill Nagy |
American Journalist |
| Steve Plytas |
Continental Journalist |
| Ronnie Stevens |
RAC Official |
| Philip Yardley |
Philippe |
| Pauline Challoner |
Ponticelli's Daughter |
| Billy Dean |
German Mechanic |
| Cicely Courtneidge |
Muriel |
| Arthur Collins |
Spectator |
| Vernon Dobtcheff |
3rd Member of French Team |
| James Villiers |
Yamamoto (Voice) |
| Norma Foster |
Actor |
| James Robertson Justice |
Narrator |