Much as I like the choices of McIntyre and Carr, I think one could suggest that neither of them was ever on the artistic roll call in the first place. They are, though, a pair of grade A cunts.
I’d nominate Billy Connolly - great shame given that he’s suffering from Parkinson’s, but when you look at what a great comedian he was in his younger years, yet he ended up mixing with knobheads at polo matches, you can’t help but think that he forgot one fuck of a lot about where he came from.
The late Ray Manzarek, keyboard player in the Doors, and (to a lesser extent) Robbie Krieger, the guitarist, would also qualify. By contrast, John Densmore, the drummer, has always refused point blank, and still does, to allow any of the Doors’ music to be used in adverts. As the agreement of all surviving members is required, he’s had a veto all these years; the other two would have cheerfully allowed any amount of commercial exploitation. Densmore’s view is that they all made more than enough from royalties - and still do - so there’s no need to sully the music they made by hearing it in commercials.