The UK has some pretty draconian quarantine rules for dogs.
Essentially the dog must be quarantined for about 3 months. All this
is due to an inordinate fear of rabies. There may have recently been
some relaxation of these requirements.. Best is to check with a
British consular office for the changes and current requirements. Most
British commonwealth and former colonies (Caribbean) still require the
full draconian isolation/quarantine.

Most other countries (also check with each consular office) typicallly
require an import process .... requirement of prior rabies vaccine
within a specified time, certification of health, certain other
vaccines, etc.

In article . com, Norm
wrote:

We plan to leave next year for Bermuda, Azores, South Coast of Ireland
and on to the UK. We have a small dog that cruises with us. Has
anyone had any experience with bringing a dog into Europe this way?
What US Preps should we take? I can guess at the documents we would
need, but if anyone has a list, that would be helpful.

Thanks in advance,

Norm