In article , GB
writes
I've just fitted a new tap to our kitchen sink. It took me nearly 4
hours. That did include altering the pipework. Plus puzzling over the
instructions on the rather complicated Bristan Easyfit tap. Great taps,
awful instructions.

But 4 hours! I'd expect to pay a plumber no more than £100-150, and
that might well include coming to quote first.
When did you last hire a plumber? Would probably cost you £100 just to
get one to think about coming.
--
bert