Looked at your list, m'Gra, for one of the places I used to live - Shrewsbury. There was a survey done in the local paper, the Shropshire Star, while I was there, on how to pronounce it. Turns out most locals don't even pronounce the first r, so it comes out as:
SHOOSBRIE (not SHOWSBRIE).
BTW there's a place up here called HarLAW (emphasis on 2nd syllable, as also in DunBAR, DunLOP, etc)And I once heard a newsreader refer to Ban-CHORy (as it's spelt) but it's BANc'ree.