Noel Fielding and Sandi Toksvig welcome journalist Krishnan Guru-Murthy, presenter Caroline Flack, actor Greg Wise and boxer Nicola Adams. The challenges are a fruity drizzle cake for Signature, a graceful - or ghastly - Technical, and a towering biscuit version of themselves for the Showstopper. Paul Hollywood and Prue Leith pass judgment on their baking skills before the winner is revealed. Which of them will follow in the footsteps of previous victors such as Russell Brand and Michelle Keegan? Last in the series.