Andi Peters, DJ Spoony and Noel Whelan cook for the judges and paying restaurant customers at Belgo in the first heat.

In the second, Debra Stephenson, Josie d'Arby and Andrew Castle cook at the National Dining Rooms.

This show features two heats. In the first, Joe McGann, Linda Barker and Ninia Benjamin cook for paying restaurant customers at Kazan; and in the second, Wendi Peters, Steven Pinder and Jeff Green cook at Cantina Del Ponte.

Only two of them will get through to the week's quarter-final, taking them a step closer to becoming the next Celebrity MasterChef.

The six best celebrity cooks remain, but at the end of the day two will be sent home for good. They must cook a two-course meal for 30 schoolchildren, and then make the perfect roast dinner to show judges John Torode and Gregg Wallace that they deserve to stay in the competition.

The four semi-finalists are sent to some of London's best restaurants to fine tune their individual cooking styles - before coming back to the studio to show judges John Torode and Gregg Wallace exactly what they've learnt. And they must then take on the challenge of being the sole caterers at an exclusive society dinner.

The four semi-finalists must cook their best two-course meal to impress three of the country's most respected food critics. And the pressure is really on as at the end of the show, judges John Torode and Gregg Wallace decide which one of the celebrities must leave the competition.