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Paul Chapman as Milton Ashe |
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Ian Ogilvy as Herbie, RB34 |
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Hamilton Dyce as Dr. Lanning |
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Wendy Gifford as Dr. Susan Calvin |
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Gerald Sim as Dr. Bogert |
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Robert James as Kelvin Brooke |
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Edwin Richfield as Jamieson |
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Roy Hanlon as Hargreaves |
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Jenny Russell as Mary Curl |
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Anna Perry as Brooke's Secretary |
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Rita Davies as Receptionist |
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Jumoke Debayo as Cleaner |
| Directing | Gerald Blake | Director |
| Writing | David Campton | Adaptation |
| Writing | Roger Parkes | Script Editor |
| Production | Alan Bromly | Producer |
| Art | Martin Johnson | Production Design |
| Sound | Norman Kay | Theme Song Performance |
| Costume & Make-Up | Dawn Alcock | Makeup Supervisor |
| Writing | აიზეკ აზიმოვი | Short Story |
