I once attended a talk given by Brian Jacques, author of the Redwall book series. He mentioned traveling throughout England and described various regional accents and differences from one small town to another. Even he had a hard time understanding (he was from Liverpool).
Manchester and the `u’ (mud): “Wipe your moody shoes.”
The author, whose real name was James Alfred Wright, was born in Sunderland, in the region north of Yorkshire, but grew up in Glasgow. The book and its sequels were based on his own experiences as a country veterinarian in Yorkshire.