Jamie Oliver unveils his 'Food Revolution' truck

Jamie Oliver has announced a 20-year plan to fight obesity around the world.

The TV chef has unveiled his "Food Revolution" truck, which is a mobile, interactive kitchen, designed to teach children about healthy eating.

The vehicle, named after Oliver's US TV show, made its debut at the Technology, Entertainment, Design (TED) conference in Long Beach, California.

Peter Bowes has had a guided tour.