As a native of north east England i would never mock anybodys twang, seeing as mine is probably the most unintelligible known to man
When I went to England on business, I interacted with folks from different parts of England. I did notice different accents. When we got together for dinner, these chaps would rib each other about the areas they came from; something we do in the states too. The chaps from the north did have a bit of a Scottish sound to their accent.
