Responsible meat-eating

One thing to consider is separating the environmental impact with animal welfare when considering your diet. Eating less meat may contribute positively to both yes. Beyond that simple formula however, if you start drilling down to specific foods the single, salient issues is that our environmental impact as Developed World consumers is insane - runnerbeans from Israel, broccoli from Morocco, quinoa fucking people's shit up in SA etc al. I guess unless you are cycling to Thamesmead to pick up your Quorn in person things there's no getting around your negative impact. Pick and choose a few battles and move on.

On another note as @amey rightly pointed out most of our "choices" are really just another extension of our privilege. Try making £17k a year with three kids and see how easy it is to go local, seasonal, vegetarian and organic. Me and my wife work full time so our kid is in nursery, that my son doesn't eat Walkers crisps three meals a day is some kind of miracle.