Well I've called around a few companies mainly smaller local glass fitters.
I've had quotes from £250 supplied from autoglass who smuggly gave a little attitude about me saying I didnt want to pay the £80 insurance excess if possible to get supplied cheaper. Best quote of the day though so far is from a local company called ABC, £30 for clear, £35 for green tint!

So next question is, which is best/looks standard for a mk4?