Distributia
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Celia ImrieHerself - Narrator
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DavidHimself - Contestant
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Lyn KendallHerself - British Mensa Gifted Child Consultant
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Sharon DanielHerself - Contestant (as Sharon)
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Aliyah GarfieldHerself - Contestant (as Aliyah)
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Hazelle Mendel-IdowuHerself - Contestant (as Hazelle)
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Curtis EltonHimself - Contestant (as Curtis)
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Tudor Mendel-IdowuHimself - Contestant (as Tudor)
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Cuneyd KahramanHimself - Contestant (as Cuneyd)
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EleanorHerself - Contestant
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JayHimself - Contestant
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Felix BowyerHimself - Contestant (as Felix)
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CaitlinHerself - Contestant
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JocelynHerself - Contestant
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MercedesHerself - Contestant