Ghillie James (right) is the author of five books including Jam, Jelly & Relish and Grains are Good. She was the food editor at Sainsbury’s Magazine and now writes for a variety of publications including the Boston Globe, BBC Good Food Magazine and the Singapore Straits Times.

Julia Parker has worked in publishing for more than 25 years, is the author of a monthly article ‘Veg on the Ledge’ for the website of the fast-food chain Leon, has written for Tesco Magazine, and runs popular courses on growing fruit and vegetables.