Noel Fielding and Sandi Toksvig host Dessert Week as the baking contest crosses the half-way point. The signature challenge is an elegant and challenging bake with a lot of delicate layers, while the technical round will test the bakers' ability to pull off delicate assembly and precise decoration. Finally, for the Showstopper, they must create a spherical celebration cake. Prue Leith and Paul Hollywood are on hand to taste the results - and decide who will be crowned Star Baker and who will be leaving the tent this week.

Noel Fielding and Sandi Toksvig host as the remaining bakers' knowledge of pastry is tested. The Signature challenge is a savoury take on a French classic, there's a multi-layered Moroccan Technical, and a towering Showstopper that requires not only an expertise with pastry, but also a solid grasp of structural engineering. With a place in the semi-final at stake, who will win the coveted Star Baker title from judges Prue Leith and Paul Hollywood?