alt Hacker NewsThe BBC actually has an official "Pronunciation Unit", which tells people like newsreaders the "proper" way to pronounce words and placenames. Unfortunately, particularly in the latter case they often get it wrong. For example, my late Dad was born in a small West Yorkshire town called Sowerby Bridge, which the unit insists should be said Sourbee Bridge. Everyone, without exception, who lives there knows it is Sorebee Bridge. Writing in to the BBC complaining about this and many other similar errors is a popular hobby.
Local pronunciations of place names are often different from what's expected, and whether intended to be such or not, are often used as shibboleths to distinguish locals from outsiders. The examples of Couch Street (/ˈkutʃ/) in Portland, Oregon and Tchoupitoulas Street (/ˌtʃɑp.ə.ˈtuː.ləs/) in New Orleans, Louisiana come to mind in American place names.