Recommend good dive boat in warm place?

Hi,

I've not dived for 10 years but I'd like to get back into it. I like
the idea of spending a week (or maybe two) on a very relaxed dive boat
in a warm place, diving a couple of times a day, eating/drinking BBQ
and salad and wine and generally having a fun time. I'd probably go on
my own.

Can anyone please recommend a boat? If this is the wrong place to ask
then is it possible to point me in the right direction? (I've asked
here since I'm in the UK, so readers here are likely to have a better
idea of what might be available to me, and at what price, than people
in North America etc.)

TIA for any help.

.