Depends if it's a major or a minor service. VW will charge £149 for a minor or £299 for a major IRC.
I paid £155 today at an independent which included getting my cam follower done (I provided the parts). I'm not that impressed with my local VW dealer who has put two scuffs in my company car doors where I assume they've opened the doors against a pillar. Therefore I won't take my own car to them. Company car has to go there as part of the lease agreement