Wiltshire Colloquialisms

I'm doing a story that includes an upper class character in Wiltshire. I've searched and searched for a decent website that can show me how a person speaks from this region of England. The closest I can find is heavy slang and street-talk which my character wouldn't use.

I'd rather not use the cliche "upper-crust-snobby" speak... unless that's the way they really talk. I can't imagine that being the case.

Anyone out there know of a site or is from the area that might be able to lend a hand?