Plot: Six of the contestants get their first taste of working in a professional kitchen during a lunch service with chef Shaun Rankin, at the Ormer Mayfair in London. The contenders then head back to the MasterChef kitchen as they aim to impress John Torode and Gregg Wallace in the Invention Test, and Michelin-star chef Tom Kitchin joins the judges to decide who will make it through to the semi-finals