Jamie has managed to transform the food in one London comprehensive, but he needs to prove that his regime will work on a large scale as he meets the biggest challenge of his career.

Jamie decides that the answer to the junk food epidemic is to ban it and make his dishes the only choice at his test school in London.

Jamie Oliver travels to Durham to see if primary school children are easier to turn around.

Can Jamie persuade the kids to live without chips and burgers or has he finally bitten off more than he can chew?