Thanks for that, Stu. Lots of good information on that site but I'm still none the wiser as to how to dismantle the faucet to get access to what i suspect will be a faulty washer or seal. I had a chain on it yesterday but was not willing to apply any real force for fear of breaking it. Do i wrench the faucet off at sink level or will i need to use a basin wrench from underneath? Will welcome advise from any other owners who havw faced such a problem !