You can try JTides * JTides Home Page
. But you should know:
"In April 2002, the UK Hydrographic Office ordered the removal
of all UK tidal data from JTides and all other free tidal prediction programs. The fact that this is a free program, created in the public interest, has had no effect on their zeal to collect nonexistent copyright fees
. The fact that this decision will decrease the safety
of sailing in the UK has not swayed them in the slightest.
I mention this because the absence of UK tidal data is one of the most common inquiries about JTides. I am powerless to shape the thinking of the bureaucrats in the UK Hydrographic office, and I can imagine Horatio Nelson shifting uncomfortably in his grave.
NOTE: See below (Version 4.9 build 232) for a restoration
of some UK sites."
So take that, UK sailors.
You can also get UK sites with paid products like Nobeltec's Tides & Currents. Or, of course, Admiralty TotalTide.