Knockout Week continues, as the best 16 amateur chefs continue to battle it out in a high-pressured cook-off. With the blue group having already cooked, it is now the turn of the red group to face the same daunting challenge set by John and Gregg. Their brief is to create one dish inspired by a personal or family-favourite recipe. In one hour and 30 mins, they must hold their nerve to deliver a dish that stands out from the crowd and prove to the judges that they have a future in the competition. John and Gregg must then make a difficult decision as they choose who has what it takes to continue in the competition and whose MasterChef journey is about to end. Who will crumble under the pressure and who will prove they have what it takes to take another precious step towards being crowned MasterChef champion 2018?

The second group of amateurs get their first taste of professional cooking. They are heading to Sartoria in London's Mayfair, run by renowned Italian chef patron Francesco Mazzei. The six contestants are responsible for serving up every dish on the menu to paying customers during a packed lunch service. Then it is back to MasterChef HQ for an invention test for John and Gregg. In a last-chance bid to stay in the competition, each cook has to show they have learned from their experience and can create a unique and outstanding dish worthy of gracing the table of a restaurant. Guest judge two Michelin-starred Nathan Outlaw returns to help John and Gregg evaluate the six amateur cooks' dishes After this challenge, one of the contestants is sent home.