Four more celebrities head to the famous Bake Off tent in aid of UK fundraising event, Sport Relief. Judges Mary Berry and Paul Hollywood set three tasks to test each celebrity's baking prowess, while comedian Ed Byrne is on hand to guide them through. The celebrities taking up the baking baton this time are ex-Spice Girl Geri Horner, BBC world affairs editor John Simpson, footballer and pundit Jermaine Jenas and 1990s pop sensation Louise Redknapp.