The third heat week continues with the four remaining celebrities facing three more culinary challenges, as they battle for a place in the semi-finals. The first challenge is the new Pairs Challenge, where the four celebrities are split into two teams of two. Each team is tasked with cooking the same dish, but in-between each pair there is a wall. The celebrities are then sent out on their first mass-catering challenge. Working in teams once again they have to make lunch for over 100 members of staff at the British Airways Global Learning Academy. It is then back to the MasterChef kitchen as the battle for a semi-final place reaches its climax. The four celebrities must now cook a faultless two-course meal that will not only be judged by John and Gregg but also by Celebrity MasterChef champions Lisa Faulkner and Kimberley Wyatt and finalist Rylan Clark-Neal. Only the best two contestants can earn a semi-final place.