The Mail on Sunday, and then the Mail started it off, but the other papers wouldn't have picked it up if it wasn't a story.
You've also had the likes of George Galloway on talkSPORT actually putting out all the complaint numbers on his show which is arguably even more of a vested interest at work - another radio station doing its best to make life awkward for the BBC.
Yeah it isnt just the Mail on sunday that have gone with this story