Omid Djalili is host of the Bake Off tent. This time, those facing the judges are Olivier award-winning singer Michael Ball, broadcaster and co-founder of Comic Relief Emma Freud, singer and presenter Jameliaand Olympic gold-medallist Victoria Pendleton. As they warm up for their baking marathon so does the rivalry between Emma and Michael, but only one can win the Star Baker apron.For their signature challenge they face a traybake, for the technical they must make iced ring doughnuts, and for the showstopper layered cakes which must pay homage to their personal sporting heroes. With a cake the girth of Sir Chris Hoy's thigh, a fondant Jamaican sprint team and an almost life-sized Big Daddy, what could possibly go wrong?They are baking for Sport Relief, hoping to inspire everyone to raise money for those who really need help. Olympic gold-medallist Nicola Adams visits South Africa to see first-hand the people whose lives have been changed by Sport Relief. Desiree's mum, Priscilla, is HIV positive and they struggle with the ignorance and stigma surrounding the condition. Nicola meets the people trying to educate the next generation, so that they do not have to struggle on their own. Your help really can make a difference.