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Robert Morley as W.H. 'Harry' Derwent Blacker |
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Margaret Rutherford as Catherine Beckwith / Jeremy St. Claire |
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Kay Kendall as Sandra Beverley |
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Michael Medwin as Jerry Winterton |
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Liam Gaffney as Norwood Beverley |
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Olive Sloane as Maud Baron |
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Lloyd Lamble as Jackson |
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Charlotte Mitchell as Daphne Ray |
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Charles Lamb as George |
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Constance Lorne as Sarah Stebbins |
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Maggie Hanley as Mary |
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Stringer Davis as Vicar |
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Joan Hickson as Harry's Landlady |
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John Cazabon as Mr Stebbins |
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Diana Calderwood as Set Painter |
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Joan Rice as Avis |
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Sam Kydd as Ambulance man (uncredited) |
| Directing | Ralph Smart | Director |
| Writing | phillip king | Original Story |
| Writing | Jack Davies | Original Story |
| Writing | Michael Pertwee | Original Story |
| Production | Robert Garrett | Producer |
| Camera | Desmond Davis | Clapper Loader |
| Production | George Pitcher | Associate Producer |
| Costume & Make-Up | Joan Ellacott | Costume Design |
| Camera | Stanley Pavey | Director of Photography |
| Directing | Philip Shipway | Assistant Director |
| Art | Geoffrey Drake | Art Direction |
| Sound | Peter Handford | Sound Recordist |
| Sound | Malcolm Arnold | Original Music Composer |
| Sound | Muir Mathieson | Conductor |
| Camera | Ted Moore | Camera Operator |
| Directing | Maisie Kelly | Continuity |
| Costume & Make-Up | Gladys Atkinson | Hairdresser |
| Sound | Red Law | Sound Recordist |
| Costume & Make-Up | John Wilson-Apperson | Wardrobe Supervisor |
| Sound | Leslie Hodgson | Sound Editor |
| Costume & Make-Up | Bob Lawrance | Makeup Artist |
| Editing | Douglas Robertson | Editor |
| Production | Jack Rix | Production Manager |
