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Prentis Hancock as Arnold Meyer |
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Anabel Worrell as Albertine Meyer |
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Illona Linthwaite as Dr. Liddle |
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Joan Blackham as Mrs. Gibson |
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Glynis Brooks as Chocky |
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Paul Russell as Paul Barclay |
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Freddie Brooks as Mike |
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Karina Wilsher as Su Lin |
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Richard Wordsworth as Professor Ferris |
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Kristine Howarth as Professor Wade |
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Leon Eagles as General |
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Roy Boyd as Professor Draycott |
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Andrew Ellams as Matthew Gore |
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James Hazeldine as David Gore |
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Norma Ronald as Chocky's Parent |
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Paul Shearer as Reporter |
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Michael Plaister as Porter |
| Writing | Anthony Read | Writer |
| Writing | John Wyndham | Characters |
| Production | Richard Bates | Producer |
| Production | Brian Walcroft | Executive Producer |
| Sound | John Hyde | Music |
| Editing | Terry Pantling | Editor |
| Production | Julian Oldfield | Casting |
| Art | Peter Elliott | Production Design |
| Costume & Make-Up | Pam Doolan | Costume Design |
| Costume & Make-Up | Jane Whittaker | Makeup Artist |
| Art | John Stamp | Graphic Designer |
| Art | Mick Mannveille | Graphic Designer |
| Sound | Sean Clarke | Sound |
| Sound | Sandy MacRae | Sound |
| Sound | Brian Moray | Sound |
| Crew | Stuart Fell | Stunts |
| Lighting | Allen Harradine | Lighting Director |
| Lighting | Allen Harradine | Lighting Director |
| Production | David Harvey | Controller |
| Camera | Peter Howell | Camera Operator |
| Camera | Jim Howlett | Camera Operator |
| Production | Allan James | Controller |
| Editing | Roger Holmes | Editor |
| Production | Barry Millar | Location Manager |
| Production | Brian Millar | Location Manager |
| Production | Valerie Farron | Production Assistant |
| Directing | Aidan Boulter | First Assistant Director |
| Directing | Bob Blagden | Director |
