大象传媒

The second week of heats continues as the four remaining celebrities fight for a place in the semi-finals.

Their first challenge is a relay invention test, and it's all about teamwork. Each team must create a main course and a pudding between them, using a whole salmon for the main, rhubarb for the pudding, and a range of fruit and vegetables, herbs and spices. Each team member has 30 minutes to make their contribution to the dishes, but they can't communicate with one another, so each cook must try to work out what the dishes are meant to be from the clues left behind by their teammate.

Next, the teams are sent out on their first mass catering challenge. They have to make lunch for over 100 members of staff at the All England Lawn Tennis and Croquet Club - home to the Wimbledon tennis tournament. With an array of ingredients, including diced lamb, whole chicken, and beef mince, and a range of fruit and vegetables, the two teams must devise, prepare and serve the lunch, catering for various tastes while creating meat-based, vegetarian and dessert dishes in volume.

Then it's back to the 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 past Celebrity MasterChef champion Phil Vickery (2011), and previous finalists Christopher Biggins (2014), and Andi Peters (2009), who know exactly what standards they expect.

Only the best two contestants can earn a semi-final place and come one step closer to winning the title of Celebrity MasterChef 2015. For those who don't make the grade, the journey ends here.