My first wife was a native of the Forest of Dean, in Gloucestershire on the borders of S Wales; and retained some of her native accent throughout life. She did not insert r's where they do not exist, but would always pronounce them where they do: so that she would pronounced 'board' and 'bored' identically, but 'bawd' differently from either; whereas those brought up to London-style RP like me would pronounce all three in the same way.

~M~