Oscar winner Richard Dreyfuss, former EastEnder Patsy Palmer, The Inbetweeners star James Buckley and TV personality Scarlett Moffatt take part in the culinary challenge. Presenters Sandi Toksvig and Noel Fielding guide them through the assorted tasks, while Paul Hollywood and Prue Leith pass judgment on their baking skills. The quartet are tasked with making roulades for their Signature challenge, alongside a tricky Technical and their favourite place in the form of a cake for their Showstopper.