The search for the crème de la crème of British pastry continues with Tom Kerridge welcoming three more teams of expert chefs in the fourth heat out of this tense competition. Competing in this episode are a cookery school teacher with two of his ... (more)former star pupils, a trio of pastry chefs from a five-star London hotel and the only all-French outfit in the competition who work in a high-end patisserie. The team with the most points at the end of the heat will earn their place in the semi-finals and awarding the points are three of the biggest names in pastry - Benoit Blin is chef patissier at Belmond Le Manoir aux Quat'Saisons, Claire Clark MBE is a world-renowned pastry chef and Cherish Finden is executive pastry chef at The Langham, London. In the Miniatures Challenge, the teams are asked to produce 36 St Marc slices, 36 sfogliatelle, an Italian ricotta-filled pastry shell, and 36 small domed cakes invented specially by the teams. Identical batches of perfect bakes are what the judges are looking for so this is all about precision cooking in high volume with immaculate results. With just three hours to make 108 pastries, which captain will take their team to the top of the leader board? In the Showpiece Challenge, the team are asked to reinvent a popular British dessert as a fine-dining experience and present it as a dazzling showpiece display. This week, sticky toffee pudding gets the five-star treatment. The teams' extraordinary designs include a model of the Lake District and a brandy snap tower which glows in the dark. Ambitious and risky, but will the judges be impressed? And who will be back to bake again in the semi-finals?