The bunting has been hung and the tent is up, which can only mean one thing - Alison Hammond and Noel Fielding are back to guide a new batch of amateur bakers through 10 weeks of challenges set by judges Paul Hollywood and Prue Leith. First up is cake week, in which the hopefuls must produce a Swiss roll with an inlay design, work out how to make fondant fancies in the technical and serve up a stunning landscape cake in the showstopper round.