John is co-founder of LEON, which now has 69 restaurants (including in Amsterdam, Utrecht and Oslo). 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, LEON Happy One-pot Cooking, LEON Fast Vegan, LEON Happy Curries and LEON Happy Fast Food with Rebecca Seal. 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 and less sugar.