BBC radio programmes were also at the receiving end of a wave of political correctness sweeping through the Blair years. "Classist" Received Pronunciation was out, regional accents were in (mostly so that Scottish cronies could occupy civil-servant jobs and the likes of John Prescott could eventually become plausible Peers of the Realm, but I digress). The result is such that, in 2013, I struggle to find any broadcast at all that might sound like old-fashioned RP. There is now no real alternative for learning RP: either you attend Oxbridge and/or belong to certain circles, or you'll be stuck with a local accent forever.
Paradoxically, trying to make RP disappear, they made it even more exclusive and desirable.