Hi Paddy - pretty much like Chewy says.
I've looked at the costs of getting a boat back from the UK and it's fairly eye-watering, unless you have an empty artic coming back anyway. The motivation being the brutal cost of boats here.
The Redbay 6.1 and 6.5 are both stunning RIBS. The 6.1 gives good performance with smaller engines, the 6.5 is usefully larger and needs about 150hp+ to get the best from them. They're not cheap, but they're handbuilt in Ireland for our conditions.
There are lots of other boats/makes about that would suit. If you plan to get the most out of them, I'd suggest a non-leisure style, so deep V and no bucket seats. Our waters are rarely calm so top speed is not as important as the ability to deal with a chop or swell and maintain a good cruising speed in comfort.
Avoid Irish manufacturer's with an "N" in their name