The fourth series of The Great British Bake Off began airing on 20 August 2013. Mel Giedroyc and Sue Perkins again presented the show and Mary Berry and Paul Hollywood returned as judges. As with series three, the competition was held at Harptree Court in East Harptree, Somerset.

The Great British Bake Off is a British television baking competition, produced by Love Productions, in which a group of amateur bakers compete against each other in a series of rounds, attempting to impress two judges with their baking skills. One contestant is eliminated in each round, and the winner is selected from the three contestants who reach the final.