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Patricia Roc as Penelope Belman |
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Nigel Patrick as Roger Cavendish |
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Stanley Holloway as Ramshead |
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Miles Malleson as Prof. Ernest Belman |
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Irene Handl as Mrs. Butters |
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Pamela Devis as Olga the Robotrix |
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Philippa Gill as Lady Mary Bromash |
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Anita Sharp-Bolster as Lady Diana |
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Fred Berger as Hotel Proprietor Farini |
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David Hurst as Wolfgang Wilhelm Winkel II (Swiss waiter) |
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Jerry Desmonde as Dress Shop Owner |
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Noel Howlett as The Professor's Associate |
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Jerry Verno as Drunk on Subway Platform |
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Johnnie Schofield as Ticket Collector |
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Dora Bryan as Model in Shop |
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Constance Smith as Receptionist |
| Directing | Bernard Knowles | Director |
| Production | George Black Jr. | Producer |
| Production | Alfred Black | Producer |
| Sound | Arthur Wilkinson | Original Music Composer |
| Camera | Jack Hildyard | Director of Photography |
| Writing | Wallace Geoffrey | Theatre Play |
| Writing | Basil Mitchell | Theatre Play |
| Writing | George Black Jr. | Adaptation |
| Writing | Bernard Knowles | Adaptation |
| Writing | Basil Boothroyd | Dialogue |
| Art | J. Elder Wills | Art Direction |
| Production | F. Sherwin Green | Production Manager |
| Editing | Peter Graham Scott | Editor |
| Sound | Desmond Dew | Sound Recordist |
| Sound | John W. Mitchell | Sound Recordist |
| Camera | H. A. R. Thomson | Camera Operator |
| Directing | Tilly Day | Continuity |
| Costume & Make-Up | Tony Sforzini | Makeup Supervisor |
| Costume & Make-Up | Vivienne Walker | Hair Supervisor |
| Sound | John Hollingsworth | Conductor |
| Production | Herbert Smith | Production Manager |
| Directing | Mark Evans | Assistant Director |
| Directing | Anthony Hearne | Second Assistant Director |
