Today is the head to head. The two highest scoring chefs from the London and south east region are cooking for judges Oliver Peyton, Prue Leith and Matthew Fort. Joining this week as guest judge is Kevin Gould, an award-winning food writer who has also been a chef, a grocer and a restaurateur. And it is a battle royal - standards are so high, the judges are handing out tens, and not just to one chef.