 I came onto this farm to get a sense of how intensive chickens are produced in this country and who decides how they're raised. I assumed it was people like Charles, the chicken farmers. But it turns out he's not got as much control over the process as, perhaps naively, I had thought. When you're a chicken farmer, you're not running the whole supply chain. You're getting your eggs and chicks from a supplier. Do you have to behave in a particular way?