From a one-person delivery service to a grab-and-go phenomenon, food writer Grace Dent follows the unstoppable rise of Britain's biggest bakery chain.
Food lover Grace Dent explores the phenomenon of Greggs, and its place in popular culture, visiting a pizza centre, the shop's original location and meeting the company's CEO.
Grace Dent gets exclusive access to Greggs's secret innovation centre at their HQ, receiving a sneak preview of new product ranges, and also looks at the famous vegan sausage roll.