Celia ImrieSelf - Narrator Thomas FrithSelf - Contestant Lyn KendallSelf - British Mensa Gifted Child Consultant Simon BlairSelf - Competition Quiz Master Giovanni TrevisanSelf - Contestant Neha NarendranSelf - Contestant Mihail Iulian BarascuSelf - Contestant Jack GranthamSelf - Contestant Sasha GordonSelf - Contestant Jasamrit RahalaSelf - Contestant Richard OsmanSelf - Presenter Rubaiyat RahmanSelf - Contestant Sharon DanielSelf - Contestant Tudor Mendel-IdowuSelf - Contestant Sophie ThakeSelf - Contestant Cuneyd KahramanSelf - Contestant HarrisonSelf - Contestant Curtis EltonSelf - Contestant Aliyah GarfieldSelf - 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 Alan CarrSelf - Contestant Aisling BeaSelf - Contestant Rachel RileySelf - Contestant Krishnan Guru-MurthySelf - Contestant Rick EdwardsSelf - Contestant Shazia MirzaSelf - Contestant Charlotte HawkinsSelf - Contestant Jo BrandSelf - Contestant Vick HopeSelf - Contestant Paul BithreyRegista / Location Producer Christian CollertonRegista / Location Producer Alex Stockley von StatzerRegista / Location Producer Wes PollittRegista / Assistant Producer Garfield CarrottRegista / Location Producer Tanya FreedmanRegista / Location Producer Chris McLaughlinRegista / Location Producer Daniel FildesRegista / Location Producer Lucy LeveugleRegista / Produttore / Cinematographer Mark SabenProduttore Esecutivo Bex HevinghamProduttore Associato Samantha De AlwisProduttore Melissa BrownProduttore Esecutivo Leanne KleinProduttore Esecutivo Stephen BryceProduction Designer Dom ClasbyProduction Designer Peter Hein-HansenMontatore Shell CoeAssistant Producer Guy HarrisSenior Producer Zara MarghamProducer: Competition Laura MarstonAssistant Producer Anna StricklandSeries Producer Aisling BrowneAssistant Producer Zinia ScroggsCompetition Producer Samuel SimonSeries Producer 
