Nice one, bet you can't wait until Tuesday.
Your next service will be the 60,000 mile one which includes a cam belt change so it will be a few £Â£Ã‚£Ã‚£Ã‚£Ã‚£Ã‚£Ã‚£, try to shop around for prices or find a good independant specialist (or do it yourself). One thing not on the VW service schedule is water pump replacement but as you have to remove the cam belt to replace the pump, it makes sense to have it done at the same time - they do tend to fail.
Mine was just over 60k when I bought it so the belt was done but not the pump so I will need to strip it all down again soon to fit a new pump - nice job for a weekend (not!)