I have a small amount of experience regarding PRS by way of questioning licence fees for playing music in my tattoo shop. My MP at the time was David Milliband and via him questions were asked at the Commons Mixed Media Committee. Long story short, the way their company is set up, they appear quite benevolent and all I got from this was a letter on House of Commons stationery. I do not belief they work in the best interests of musicians, but rather to maximise payments to Directors.