Well, I'm in the south-east so I guess I should make my summer holiday a tour of the outer slums of Blackpool and Salford. I went to school in a fairly affluent area and, thinking back, we didn't have any fat girls. There were plenty of very attractive slim ones (athletic types, horse enthusiasts, etc.) but the only big girl I can remember was just 'big' - built like a Viking alewife.
I appreciate there probably are plenty of hot fat girls to be found if I made a committed search, though I'd probably have to change my lifestyle quite a bit. I'm pretty active and have quite niche interests, whereas I have a preconception that a lot of fat girls are quite 'basic'. I get that it's on me to do something about that and compromise as necessary.
I wasn't really looking for advice, I was just hoping some people might have actually had success which could serve as inspiration.