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Dirk Bogarde as Sebastian |
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Susannah York as Rebecca Howard |
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Lilli Palmer as Elsa Shahn |
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John Gielgud as Head of Intelligence |
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Janet Munro as Carol Fancy |
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Ronald Fraser as Toby |
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Margaret Johnston as Miss Elliott |
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Nigel Davenport as Gen. Phillips |
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John Ronane as Jameson |
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Hayward Morse as Gavin |
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Donald Sutherland as Ackerman |
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Ann Beach as Pamela |
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Susan Whitman as Tilly |
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Ann Sidney as Naomi |
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Veronica Clifford as Ginny |
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Louise Purnell as Thelma |
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Portland Mason as 'UG' Girl |
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James Belchamber as Man with Dog |
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Charles Farrell as Taxi Driver |
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Charles Lloyd Pack as Chess Player |
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Alan Freeman as TV Disc Jockey |
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Jeanne Roland as Randy |
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Lynn Pinkney as Joan |
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Sally Douglas as Uncredited |
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Stuart Hoyle as Uncredited |
| Editing | Brian Smedley-Aston | Editor |
| Production | Michael Powell | Producer |
| Directing | David Greene | Director |
| Production | Gerry Fisher | Producer |
| Production | Herbert Brodkin | Producer |
| Writing | Gerald Vaughan-Hughes | Screenplay |
| Art | Richard Williams | Opening Title Sequence |
| Production | Edith Hamlin | Casting |
| Art | Fred Carter | Art Direction |
| Art | Alf Pegley | Property Master |
| Sound | H.L. Bird | Sound |
| Directing | Zelda Barron | Continuity |
| Costume & Make-Up | Gladys Leakey | Hairdresser |
| Production | John Pellatt | Associate Producer |
| Sound | Don Challis | Sound Editor |
| Writing | Leo Marks | Story |
| Sound | Tristram Cary | Sound Effects |
| Costume & Make-Up | Sue Yelland | Costume Consultant |
| Costume & Make-Up | Bridget Sellers | Wardrobe Master |
| Camera | Jimmy Turrell | Camera Operator |
| Camera | Wally Byatt | Focus Puller |
| Art | Terence Morgan | Set Decoration |
| Directing | Ann Skinner | Continuity |
| Directing | Gordon Gilbert | Assistant Director |
| Art | Terence Morgan II | Set Dresser |
| Sound | Gerry Humphreys | Sound |
| Costume & Make-Up | Bob Lawrance | Makeup Artist |
| Editing | Keith Palmer | Assistant Editor |
| Editing | Jimmy Turrell | Assistant Editor |
| Art | Wilfred Shingleton | Production Design |
| Production | Clifton Brandon | Production Manager |
| Camera | Gerry Fisher | Director of Photography |
| Sound | Jerry Goldsmith | Original Music Composer |
