Richard Osman presents a Child Genius festive special, a gift for all to enjoy as four of the show’s most formidable past competitors take on four of the country’s finest celebrity minds in a test to see who has the brightest brains this Christmas. Battling it out in demanding tests of spelling, maths and general knowledge - who will know their tinsel from their times tables?

Only one team can be crowned Christmas champions – can the celebrities take on the Child Geniuses and win?