Nine-year-old Aliyah's psychologist parents have devised a special training regime to give their daughter optimum brain power, deploying everything from juicing to alternative therapies. Eleven-year-old Rubaiyat already has an A* at Maths GCSE, but is hoping the competition will help him add another feather to his cap. Eight-year-old Tudor's perfectionism and his parents' expectations make him a determined contender. Will the competition challenge piano prodigy Curtis, who has already completed the first year of a university degree, at just nine? There's also eight-year-old Jocelyn, who has one of the highest IQs in the competition, but has not been to school for more than half a day.