Jeremy Clarkson, Katherine Jenkins, Jason Manford

A fresh assortment of celebrities including Jeremy Clarkson, Katherine Jenkins and Jason Manford join Chris for the first show of the new series. There are also appearances from Britney Spears and Robbie Williams. They're keen to demonstrate their general knowledge in the new rounds and challenges with the aim of claiming the top spot on the illustrious leaderboard and avoiding singing out the show. Also joining Chris during the series are Tulisa Contostavlos, John Bishop, Frank Skinner, Amir Khan, Gok Wan, Pixie Lott and Alesha Dixon.