With sustainability at the forefront of our minds and one in three of all food produced globally going to waste, understanding how to prevent food waste is more important than ever before. Regent Street & St James's are leading the charge in this with their Food Waste Pledge, a pioneering movement inviting 11 dining destinations to commit to the future by reducing waste by 25% by May 2020. In honour of this, Elizabeth Day talks with Melissa Hemsley, British vogue sustainability columnist, Henry Dimbleby OBE, co-founder of Leon and the Sustainable Restaurant Association and Emmy Van Beek head of sustainability at London's favourite Steak restaurant - Hawksmoor. Together, they discuss everything from identifying sustainable restaurants to a future of LED grown lettuces and devices that can scan your cauliflower for its nutrient content. What does all of this mean for the food industry and the future of sustainable eating? Have a listen to find out.