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Ralph Richardson as Prof. Heatherville |
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Raymond Huntley as Prof. Laxton-Jones |
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John Laurie as Dr. McVitie |
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Ernest Jay as Dr. Dainty |
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David Tomlinson as Mr. Watlington |
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Finlay Currie as Sir Duncan Wills |
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Norman Webb as Dr. Wainwright |
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Michael Hordern as Lt. Cmdr. Lowther |
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Pamela Matthews as Mrs. Watlington |
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Joan Haythorne as Mrs. Laxton-Jones |
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Joan Young as Mrs. McVitie |
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Ann Wilton as Mrs. Dainty |
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Richard Attenborough as Jack Arnold |
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David Hutcheson as Squadron Leader Sowerby |
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Patrick Waddington as Group Capt. Aspinall |
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Cyril Smith as Flight Sgt. Cox |
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James Hayter as Warrant Officer |
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D. Bradley Smith as Air Marshal Cotter |
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Robin Bailey as Wives' Escort Officer |
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Hugh Dempster as Sqdn. Ldr. Slatter |
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Kenneth Buckley as Sqdn. Ldr. Buckley |
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Paul Carpenter as Flt. Lt. Argylle |
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Anthony Dawson as Flt. Lt. Norton |
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Robert Long as Flying Officer Davies |
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Richard Mantell as Air Vice-Marshal |
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Murray Matheson as Wing Cdr. Allen |
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Anthony Wyckham as Flying Officer Ogden |
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Peggy Evans as Daphne Adams |
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Ingrid Forrest as Penelope Birkenshaw |
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Geraldine Keyes as Phyllis Hammond |
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Vida Hope as WAAF Flight Sergeant |
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Sonia Elverson as WAAF Teller |
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Robert Wyndham as Major |
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Andrew Blackett as Captain |
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Bill Owen as Paratroop Sergeant (as Bill Rowbotham) |
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Tony Arpino as 1st Commando |
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Peter March as 2nd Commando |
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Bob Elson as 3rd Commando |
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Roger Keyes as 4th Commando |
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Trevening Hill as 5th Commando |
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Edward Hodge as 6th Commando |
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Joseph Almas as Dr. Klemmerhahn |
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Arthur Rieck as Lt. Hense |
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Ernest Urbank as 1st Sentry |
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Karl Morel as 2nd Sentry |
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Marjorie Rhodes as Mrs. Arnold |
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Edward Lexy as Sir Desmond Prosser |
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Hugh Pryse as Sir Nicholas Hathaway |
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O.B. Clarence as Old Retainer |
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Aubrey Mallalieu as 1st Club Member |
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Desmond Roberts as 2nd Club Member |
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Guy Belmore as 3rd Club Member |
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Alvar Liddell as BBC Announcer (voice) |
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Kenneth More as Bomb Aimer (uncredited) |
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Arthur Mullard as (uncredited) |
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Ian Selby as Man at Dance (uncredited) |
| Directing | Peter Ustinov | Director |
| Writing | Peter Ustinov | Writer |
| Production | George H. Brown | Producer |
| Editing | Russell Lloyd | Editor |
| Sound | Alan Rawsthorne | Original Music Composer |
| Production | Filippo Del Giudice | Executive Producer |
| Production | Peter Ustinov | Producer |
| Art | Paul Sheriff | Supervising Art Director |
| Costume & Make-Up | Tony Sforzini | Makeup Artist |
| Costume & Make-Up | Vivienne Walker | Hairstylist |
| Directing | Michael Anderson | Assistant Director |
| Camera | Jack Hildyard | Director of Photography |
| Sound | Desmond Dew | Sound Recordist |
| Sound | Harry Miller | Sound Editor |
| Production | David Cousland | Production Manager |
| Art | Carmen Dillon | Art Direction |
| Sound | John Cook | Sound Recordist |
| Lighting | Norman Foley | Gaffer |
| Sound | Muir Mathieson | Music Director |
| Camera | Gilbert Taylor | Camera Operator |
