`Inside the Factory' follows presenters Gregg Wallace and Cherry Healey as they explore the secrets behind large-scale food production. With exclusive access to some of Britain's biggest food factories, the pair investigate the journey of everyday items, from how the raw materials are sourced, to how the products are made, packaged and transported to the supermarket shelves. Historian Ruth Goodman provides insight into the history of the production and demand of some of Britain's favourite products.