Its been 6 years since I went diving so asked in the Aquasport shop (look beside the American Indian cafe on the seafront), and arranged for a dive a couple of days later.
Met by Tony, who was friendly and helpful, and managed to get some kit to fit me in no time. Went to the small harbour and had a leisurely shallow dive that reminded me of all the things I used to know, and of the pleasure of diving.
Saw a lot of fish including barracuda, groupers, bass, pipefish, eels, as well as cuttlefish, starfish and crabs etc - water was even warmer than I expected for a January dip.
Definately go with these guys again next time I'm on the island.