The first challenge is the new Pairs Challenge, where the four celebrities are split into two teams of two, and each team is tasked with cooking the same dish. Both plates must be identical in both appearance and flavour, but there is a catch. In-between each pair there is a wall. The only way for the celebrities to successfully produce identical plates is by communicating with their team mate through the wall.

The celebrities are then sent out on their first mass-catering challenge. Remaining in their teams they have to make lunch for over 100 members of staff at the famous Tilbury Docks, the largest port on the River Thames. With an array of ingredients, including chicken breast, beef mince and pasta, as well as a range of fruit and vegetables, the two teams must devise, prepare and serve the lunch, catering for various tastes and creating meat-based, vegetarian and dessert dishes in volume. In the heat of the kitchen the celebrities will have to rely on teamwork skills as well as their culinary ones to triumph.

Then it's back to MasterChef headquarters 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 Emma Kennedy (2012) and Sophie Thompson (2014), and finalist Sam Nixon (2015). Only the best two contestants can earn a semi-final place and come one step closer to winning the title of Celebrity MasterChef 2018. For those who don't make the grade, the journey ends here. Show less