Its the dreaded ESP system, quoted between £1200 & £1500 beware all that use this system!!
On the plus side and after a bit of negotiation (Press Clippings etc etc) VW have agreed to pay for the part £700 plus vat and 50% of the labour to fit it.
Final bill to be £176.00,. Result I think especially as out of warranty by 9 months and I serviced it myself albeit using VW parts and kept the receipt.
Well happy could of been a lot worse.