Pearlsacarolsinger
Up in the clouds
This isn't strictly true; knackermen or the hunt will only take horses with edible meat. My two have both had general anaesthetic - and this renders them toxic for the food chain so I'd have to pay to have them PTS by the vet - and for disposal/cremation of the carcase which could be upwards of £1k each.
This not my experience, they will burn the body. I have only ever had 2 horses pts by the vet, who had been involved in their care immediately prior to the decision. All the others have been shot, no questions asked, after discussion with a vet, by either knackerman, equine crem or hunt. I even once took a dog who had died suddenly at home to a local hunt for disposal.