Thanks for the quick responses and some excellent advice, I've just went out for a quick run, and I think I've found the culprit...
This pic shows where the offending part is in relation to the coolant reservoir:

This is the actual part, its sipping out from the seal..

Could anyone tell me what that part is called? So that I could inform the dealer to order it in advance.
Cerealsurfer, if you think about moving house, please move to Manchester, great city
