For the first time ever, the tent welcomes a baker's dozen to do baking battle. Mel Giedroyc and Sue Perkins coax them through their baking trials, all the while under the scrutiny of the judges Mary Berry and Paul Hollywood. The first challenge? A sandwich cake.

It's week three, and the heat in the kitchen is already too much for some, as the remaining 11 bakers get ready to deal with desserts. These include a Signature Trifle combining biscuit, cake, jelly or custard in perfectly distinct layers.