Think very carefully. I grew up in the countryside (not UK) and have lived all over the world in urban and rural environments, am confident, sociable and arrived with a small baby, a predisposition to like the place and a will to get involved, but the only place I have been entirely miserable was a large, pretty, prosperous Midlands village.
Despite volunteering, attending baby groups, going to the pub, using local businesses, getting involved in local events, having a child in nursery and later the village school, and working locally (as did DH), I have never met people who were so utterly insular.
I concluded after a while that if the majority of a population have never left the locality, and have always known one another, living surrounded by family and people they have known since childhood and marrying among them, they simply never acquire the normal skills the rest of us develop in how to behave around people you don't know.
It wasn't even that they weren't open to making new friends which obviously was their right it was that they'd never had to think of themselves and their environment as not always already utterly familiar to everyone they encountered. It was simply too much trouble to them to have to get their head around someone who hadn't always known them, or who had come from somewhere else.
I did try for seven years, getting involved in stuff and having people over, and then gave up and moved away. I have a rather lovely watercolour of the extremely pretty main village street that I bought from the local art circle's annual exhibition because it's the only place DS remembers living, and obviously it's important for him to remember it and every time I see it on the wall, I remember how miserable an experience living there was.