So true. To be fair, in the village where I live, "morning" is generally well received and often given. When I used to live in a town only 5 miles away I used to count it a success if I could get a single response to a "good morning" on a 30 min run. London is a whole different game - any interaction unwelcome!
Out walking on t'moors ey oop's get exchanged almost 100% of the time
I used to do a lot of business in Scotland, Aberdeen area. Between my Southern US accent and their local yammerjammer, we needed a frickin interpreter. After a pint or two though, we figured it out.
Watch how the word 'been' is pronounced. This is the hardest one to do when affecting an accent.
Dance is another one that if often wrong as the pronunciation has shifted about between the classes.
I always loved the 'Spaghetti trees' documentary. People will believe anything they see on telly.