They're much better now that they got rid of the Cross and Norman ownership.
Can't say much about their service department, but dubberz.com should be able to answer that question without much of an issue. That said, Guildford Volkswagen (VW of Surrey now, I believe) and Capilano Volkswagen were always the go-to dealerships for modified VW's still under warrranty (and even those out of warranty).
Oh... and there's still mk4's out there without the coilpack replaced?

lol