The Great Celebrity Bake Off for Stand Up To Cancer — Episode 4: Lee Mack, Griff Rhys Jones, Melanie Sykes, Joe Lycett

You are watching the episode Lee Mack, Griff Rhys Jones, Melanie Sykes, Joe Lycett This time the celebs face a blondies signature challenge, a testing technical, and the opportunity to reveal their secret passion with a cake showstopper.