I think there’s an issue in the production process where faeces etc are part of the output, rather than washing the chicken before butchering it, I think the chlorine washing is needed because the meat itself is contaminated.
I’ve been inside a UK free range organic chicken farm shed (~20,000 chickens I think) on the small farm of a friend and it was really nice even though most of the chickens preferred to be inside they weren’t crammed together and the environment was well maintained. I’ve seen film inside other “free range” production facilities which are appalling. I’m not saying all UK production is like that which I’ve seen, I know it isn’t, but for such good conditions as the ones I saw to be viable the minimum standards can’t be that much below them.
PS finally sorted the boat engine I was getting worried that feeding it water had ruined the fuel injectors or something, but I really like this engine. It is amazing what I put it through and it is so far still going strong.