The first heat of The Great Sport Relief Bake Off sees four well-known faces don their aprons in this charity special hosted by Mel Giedroyc. Baking for Sport Relief in this heat are actress Sarah Hadland, TV gardener Joe Swift, botanist and broadcaster James Wong and actress Angela Griffin. Only one baker from each heat can go through to the final. Their baking skills are tested to the limit as they face three classic Bake Off challenges - all devised by the Bake Off judges Mary Berry and Paul Hollywood. (thetvdb.com)