John is co-founder of Leon, which now has more than 55 restaurants (including restaurants in Amsterdam, Utrecht, Oslo and Washington DC). He wrote Leon Naturally Fast Food with Henry Dimbleby, Leon Family & Friends with Kay Plunkett-Hogge, Leon Happy Salads and Leon Fast & Free with Jane Baxter and Leon Happy Soups with Rebecca Seal.

He believes food has the power to delight, invigorate and bring people together. He thinks that our relationship with food should be positive and joyous and that we need to listen more carefully to our gut, eat more good fats, less sugar. And a whole lot more plants.

Jack Burke is a writer, actor and private chef. He spent many university holidays cooking in Italy and France when he should have been studying for his Classics degree. Born and based in London, he can often be heard on the radio and is the host of several video series for Leon.