For the very first time on the show, vegan week takes place. Judges Prue Leith and Paul Hollywood have set three very different challenges to test the remaining bakers - a savoury pastry Signature, with no butter involved, a Technical with a very unusual ingredient and a spectacular Showstopper that in the heat of the tent threatens to lead to catastrophe. Who will keep their cool and win star baker? And who will be meeting their end? As ever, Sandi Toksvig and Noel Fielding are on hand to lend support to the contestants.