Fast food joints are not places that I go to very frequently. In fact, it had been years since I last went into a McDonalds – until a couple of weeks ago. I knew that they used British and Irish beef (who could have missed the advertising?), but I was astonished to see that they also use organic milk, Rainforest Alliance tea, RSPCA assured pork and MSC certified fish.
Similarly, when I visited my local Wetherspoons and asked them about the provenance of their fish, they directed me to a leaflet that told me exactly why they consider their fish to be sustainable, where they get their free-range eggs from, etc.
McDonalds and Wetherspoons are both known for offering food at affordable prices. If they can buy responsibly-sourced food and still offer great prices to customers, can you?
https://www.mcdonalds.com/gb/en-gb/good-to-know/about-our-food.html