Not sure whether it'll be covered by warranty or the price a garage will charge but the part is roughly £35.A independent garageI know with good reputations up your way are Statllers (in Sheffield). I would avoid VW dealers as you'll be looking at stupid money.
Thanks for the replies, Ended up taking it to a local garage approved by my warrenty, seems its either the DV (£30ish) or another something relating to this at (£25) they rang up warrenty people and sounds like it should be covered, will know all tomorrow :)