I'm glad that they're being more realistic and inclusive with the accents, but I'm afraid that those subtleties go right by me, whizz! In fact, I am one of those annoying Americans who is capable of mistaking an Australian accent for a British one. Seriously, I never try to guess where people are from when I meet them while traveling, because I've been so completely off-base so often. As for figuring out North London vs. oh, I don't know, Manchester or something, I have no chance. ; )