I've bought this tap:
http://www.bristan.com/epages/Bristan.sf/en_GB/?ObjectPath=/Shops/Bristan/Products/%22VAL%20WMSNK%20C%20CD%22/SubProducts/%22VAL%20WMSNK%20C%20CD%5E1%22
The instructions are very limited and I'm at a loss as to how fit it without cutting a hole in the other side of the...