With Sandi Toksvig, Noel Fielding, Paul Hollywood, Prue Leith. The bakers tackle signature biscuits that will say something both about them and a place in the British Isles. Next the bakers face their first Technical, and hiding under the gingham cloth is one of Paul's childhood favourites - an iconic biscuit that's sure to send the bakers round in circles. Finally, it's crunch time. The bakers will have to be picture perfect with their first showstopper - a...