Well, just because it's popular in the US, doesn't mean it will be popular here.
I am in Scotland, rather than England, but at one stage I was looking for extra care for my (now deceased) elderly greyhound, and was seeking a 'doggie daycare' type situation, where he would have been with people and other dogs all day and constantly looked after. I didn't find anything like that... best I found was someone who would come in and take him for toilet breaks/short walks twice a day.
If I hadn't been in a rented flat, I'd have considered starting a doggie daycare as a business for myself!
Good luck.