A joint Ecostorm/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.
Full investigation: Revealed: the dirty secret of the UK’s poultry industry
Ecostorm: the world's leading ethical investigative agency 