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Wilfrid Grantham as The Lepidopterist / First Snail |
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Edmund Willard as The Tranp |
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Pamela Standish as The Chrysalis |
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Frank Birch as Mr. Beetle / Commander of the Yellows |
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Maire O'Neill as Mrs. Beetle / Philanthropist |
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Charles Peters as Robber Beetle/Journalist |
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Rupert Bruce Lockhart as The Ichneumon Fly / Inventor |
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Sheila Kay as The Larva |
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Leslie French as Mr. Cricket / Second Snail |
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Wendy Toye as Mrs. Cricket |
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Wilfred Franks as The Blind Ant Timekeeper |
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Geoffrey Wincott as The Parasite |
| Costume & Make-Up | Hugh Stevenson | Costume Design |
| Sound | Frederic Austin | Music |
| Production | Stephen Thomas | Producer |
| Directing | Stephen Thomas | Director |
| Writing | Clifford Bax | Adaptation |
| Writing | Karel Čapek | Writer |
| Writing | Josef Čapek | Writer |
| Crew | Andrée Howard | Choreographer |
