Episode 4

Comic Relief takes over the Great British Bake Off tent. The rules have been relaxed so a host of well known personalities can lay their baking skills bare in the name of Comic Relief. Each night different faces will battle it out to claim one of the four Comic Relief 'Star Baker' titles. Mel Giedroyc is on quality control duty whilst Mary Berry and Paul Hollywood resume their roles of formidable judges. Lorraine Pascale will be reporting from Ghana on how the money raised really can change lives.

Claudia Winkleman, Ed Byrne, Martha Kearney and Olympian Helen Glover try to impress the judges in the last round. Attempting to prove that they've got what it takes to claim the title of Comic Relief star baker, they attempt signature chocolate biscuits, get to grips with a family size lemon meringue pie and try to celebrate Comic Relief's 25th anniversary with a showstopping birthday cake.