Thanks for all the replies. Very interesting.
I've got a different plumber coming over on Saturday to have a look to see if he can determine what the excessive noise is and what can be done to resolve it.
Ed
Hi - I've just had a couple of extensions built and with that 2 new bathrooms and down stairs toilet fitted. At the same time we had a new boiler and plumbing due to the new boiler location.
Now when a cold tap, toilet flushed or boiler tank filled it makes a hell of a noise whith the water...