Celia ImrieSelf - Narrator Thomas FrithSelf - Contestant Lyn KendallSelf - British Mensa Gifted Child Consultant Giovanni TrevisanSelf - Contestant Jasamrit RahalaSelf - Contestant Jack GranthamSelf - Contestant Neha NarendranSelf - Contestant Simon BlairSelf - Competition Quiz Master Mihail Iulian BarascuSelf - Contestant Sasha GordonSelf - Contestant Richard OsmanSelf - Presenter Rubaiyat RahmanSelf - Contestant Tudor Mendel-IdowuSelf - Contestant Sharon DanielSelf - Contestant Cuneyd KahramanSelf - Contestant Sophie ThakeSelf - Contestant HarrisonSelf - Contestant Aliyah GarfieldSelf - Contestant Curtis EltonSelf - Contestant Hazelle Mendel-IdowuSelf - Contestant Felix BowyerSelf - Contestant Kale Cunningham-WalkerSelf - Contestant Ethan Cunningham-WalkerSelf - Contestant Nishi UggalleChild Genius team captain Jimmy CarrSelf - Contestant Sam WilsonSelf - Battlefield Expert MercedesSelf - Contestant Ieysaa Bin-SuhaylSelf - Contestant Lewis StuartSelf - Contestant Aisling BeaSelf - Contestant Alan CarrSelf - Contestant Rachel RileySelf - Contestant Krishnan Guru-MurthySelf - Contestant Rick EdwardsSelf - Contestant Charlotte HawkinsSelf - Contestant Shazia MirzaSelf - Contestant Jo BrandSelf - Contestant Vick HopeSelf - Contestant Paul Bithrey監督 / Location Producer Christian Collerton監督 / Location Producer Alex Stockley von Statzer監督 / Location Producer Wes Pollitt監督 / Assistant Producer Garfield Carrott監督 / Location Producer Tanya Freedman監督 / Location Producer Chris McLaughlin監督 / Location Producer Daniel Fildes監督 / Location Producer Lucy Leveugle監督 / プロデューサー / Cinematographer Bex Hevinghamアソシエイトプロデューサー Melissa Brownエグゼクティブプロデューサー Leanne Kleinエグゼクティブプロデューサー Stephen BryceProduction Designer Dom ClasbyProduction Designer Shell CoeAssistant Producer Guy HarrisSenior Producer Zara MarghamProducer: Competition Laura MarstonAssistant Producer Anna StricklandSeries Producer Aisling BrowneAssistant Producer Zinia ScroggsCompetition Producer Samuel SimonSeries Producer 
