A few North East ones, including Metro:
Chichester - correct pronunciation is “chy-chester”, sometimes mispronounced “chi-chester” (which would be the correct pronunciation of the place of the same name on the South Coast)
Prudhoe - correct pronunciation is “Pruddah”, often mispronounced “Prud-hoe” and “Prood-hoe”
Grosmont - correct pronunciation is “Grow-mont”, sometimes mispronounced “Gros-mont”
Heighington - correct pronunciation is “High-ing-ton”, sometimes mispronounced “Hey-ing-ton”
Morpeth - correct pronunciation is with the emphasis on the first syllable, sometimes mispronounced with the emphasis on the second syllable.
In the North East Region when I was on the Tyne & Wear Metro back in September, I have heard Pelaw being pronounced "Pee-lore" onboard the train, but I heard a lady passenger who boarded asking if it calls there with her pronunciation being "Pellow" (like Marti Pellow who is/was the frontman for the Clydebank quartet Wet Wet Wet).
Which pronunciation is right, or are both correct depending on which side of Tyne the locals are from?
The one on the train is correct.