Gareth Malone, Brian McFadden, Sam Thompson, Sindhu Vee, Desiree Burch, Lee Mead, Kiri Pritchard-McLean, Lauren Steadman

Romesh Ranganathan hosts as Gareth Malone, Brian McFadden, Sam Thompson, Sindhu Vee, Desiree Burch, Lee Mead, Kiri Pritchard-McLean and Lauren Steadman try to win £50,000 for charity.