update for anybody interested, been to see the local warranty manager today, friendly guy named Shaun. He took a few photos and says he sends them off to VW who will probably turn down the repair on the grounds its mechanical,but once he has a case number he will turn case over to customer care for me, I asked what is the likely outcome from customer care and was told that it was very likely that it would be repaired with no cost to me, dont know what kind of repair would be offered as yet, it all sounded to good to be true, but he seemed an honest guy so fingers crossed