Too many 'Rs' at the BBC

As is normal most days I have NNC Breakfast News on in the background when I get up, but am tiring of the addition of the letter 'r' into what seems to be a growing number of words. Why do presenters insist that Glasgow is pronounce Glarsgow? Bath as Barth? Castle as Carstle? and the list is longer then the examples I have detailed. Come on BBC get it right.