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Michael McVey as Paul Gibson |
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Pheona McLellan as Fiona Hatton-Jones |
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Patrick Troughton as Professor Wagstaff |
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Jeff Rawle as Sniffy Kemp |
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Sorcha Cusack as Miss Campbell |
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Ronnie Brody as Grandpa Hatton-Jones |
| Production | Harold Orton | Producer |
| Sound | Andrew Shergold | Sound Editor |
| Sound | Harry Robertson | Original Music Composer |
| Directing | Richard Leyland | Assistant Director |
| Editing | Gordon Grimward | Editor |
| Sound | Colin Martin | Sound Mixer |
| Camera | Tommy Fletcher | Director of Photography |
| Directing | Phyllis Townshend | Continuity |
| Art | Michael Pickwoad | Art Direction |
| Production | John C. Wilcox | Production Manager |
| Costume & Make-Up | Rita Wakely | Wardrobe Supervisor |
| Writing | T. E. B. Clarke | Writer |
| Directing | Jan Darnley-Smith | Director |
| Sound | Aubrey Lewis | Sound Mixer |
