When my daughter and her husband first moved to Milton Keynes they both felt the people were taking the p*ss at their Yorkshire accents. Now her accent is not so strong, but when she comes back home she finds it again. I like the Welsh accent a lovely soft one, not sure which part of Wales.
Lottie Yorkshire people are supposedly known for their friendliness but I must say I don't think that applies in York (other Yorkshire folk have also said this). We tend to be quite stand-offish until we get to know people, but once you're accepted you'll never have better friends.
Although I have no direct experience of it, the most unfriendly region of the UK is reckoned to be the Welsh-speaking areas of North Wales. Apparently this is directed not only towards the English but also people from other parts of Wales, even Welsh-speaking ones.
I have not read through this thread, but didn't Henry Higgings say," Why can't the English teach their children how to speak, this verbal class distinction by now should be antique"