I've noticed since moving back to the UK, that chicken is often marked very prominently as being British but less attention seems to be given to the conditions in which the bird was raised. Do you care where your chicken comes from or do you think it is more important that it lived in decent conditions, regardless of location?
When I ate chicken I just used to eat the ones from the supermarket without thinking about where they came from. That seems odd in retrospect since I cared about the conditions of the birds that laid the eggs I ate. I guess it's a case of out of sight, out of mind. I don't eat chicken at all now, but if I did I suppose I'd try and get it from a farm with ethical practices.
I think that eating chicken is a choice, and I would much rather eat it less frequently, but support farmers that actually provide some sort of animal welfare to the animals.
I would suggest that the vast majority of society is beginning to understand the conditions that chickens - and pigs - in battery farms suffer in. I'm not normally so strong in my opinions, but if someone continues to purchase cage eggs/meat then there's not much more I can say to that person.
For me, the welfare of an animal or bird is more important than its nationality. Though having a locally reared chicken is better from an environmental point of view, there's no guarantee that a British chicken has travelled fewer miles than a Dutch one, where I live. So for me, ensuring it is organic or at the very least reared outdoors is the most important consideration. Not just ethically but it also means better quality meat I've found.