Episode 24
The four remaining chefs return to the professional kitchens with a spell in top London restaurants. Then they cook a dish for Gregg and John to showcase what they have learnt.
The Celebrity MasterChef semi-finals begin and the four best celebrity cooks remain in the competition.
They start by returning to the professional kitchens. This time the celebrities are split up, each finalist cooking a lunchtime service to enhance their skills and iron out their weaknesses. Working to each head chef's meticulous standard, the celebrities are put through their paces in some of London's best known restaurants.
Next the celebrities head back to the MasterChef kitchen to illustrate just how much they have learnt. Judges John and Gregg challenge the four to cook one superb dish inspired by their time in the restaurant, in just one hour.
The fight is on as only one can be crowned Celebrity MasterChef Champion 2012.