I love horses, but agree with others who say the real issue is animal welfare, rather than whether the fact horse meat isn't generally sold in the Uk.
I eat meat, possibly 3 times a week. I only buy free range hens, can't find any free range ducks, so won't buy them, as I find the notion of ducks with their beaks off, and no access to water simply abhorrent. I buy lamb from our local butcher, as I see his sheep enjoying life on the moors, before they make the journey to his shop. He also sells free range pigs and venison.
I don't eat farmed fish.
I don't want to become vegetarian, but I do want to do what little I can to ensure we don't cook anything that hasn't walked about, and enjoyed some freedom