The two remaining London and the south east chefs must cook their four-course menus again. But will they take on board their veteran's advice as they remake their 'Feast to Say Thank You'? The chefs need to impress the formidable judges - food writer Matthew Fort, restaurateur Oliver Peyton and broadcaster and cook Andi Oliver, as well as a guest judge from the NHS. Today they are joined by Jenny Turner who, at the age of 77, is Britain's longest-serving nurse. Both chefs raise their game and impress the judges with their inventive dishes, but only one can go through to represent London and south east England in the national finals.