Sick chicken: what you need to know and what the government won't tell you – video

A Guardian undercover investigation exposes conditions inside the chicken factories that supply some of the biggest supermarket and fast-food chains in the business, including KFC, Tesco, Aldi, Asda, Marks & Spencer and Nando’s. Find out why the drive for cheaper chicken is making more than 250,000 of us sick every year

• Revealed: the dirty secret of the UK’s poultry industry