Bradley Walsh presents as Good Morning Britain's Ranvir Singh, journalist John Sergeant, ex-rugby international Ugo Monye and TV presenter Mariella Frostrup pit their wits against ruthless quiz genius the Chaser in the hope of winning a potential prize pot worth thousands of pounds. They must work as a team and play strategically to answer general knowledge questions against the clock and race down the game board to the exit without being caught

Bradley Walsh presents as Embarrassing Bodies presenter Dr Christian Jessen, Jonathan Benjamin `JB' Gill of JLS, comedienne Helen Lederer and former professional snooker player Stephen Hendry pit their wits against the Chaser in the hope of winning a potential prize pot worth thousands of pounds for their charity of choice. They must work as a team and play strategically to answer general knowledge questions against the clock and race down the game board to the exit without being caught