The chefs are shocked when they discover this week's Quickfire Challenge is the midseason finale of Last Chance Kitchen. They enjoy afternoon tea as they help Padma and Tom decide on who should return to the competition. The chefs take a trip to Highclere Castle for the Elimination Challenge, where they must work together to create and serve an elevated picnic basket. Will the teams be able to produce high-end picnics that can impress Padma, Tom, Gail and guest judge and notable pastry consultant Graham Hornigold? Who will be asked to pack their picnic basket and go?