Overview: For this year's BBC Children in Need charity special, actor and comedian John Thomson and his daughter Olivia take on BBC newsreader Reeta Chakrabarti and her daughter Roxy. Experts Thomas Forrester and Tim Weeks guide our celebrities around the Three Counties Showground in Malvern as they search for toys that they hope will make big profits for Pudsey when they go under the hammer with auctioneer Charles Hanson.