Sian Williams and Stefan Gates take a closer look at the food that is grown, reared and produced in Britain, and the fragility of the country's food chain. Kicking things off, the Hexts from Somerset are set a daunting challenge of only buying produced here in Britain, which proves to be a difficult task. Later, Stefan investigates how consumers can save money by supporting British pig farmer, and Sian asks whether British food and drink producers can compete against their international rivals.