In reply to robhowell:
Hi Rob, I moved from west Cumbria to Pembrokeshire (near Tenby) about 8 years ago. There seems to be less outdoorsy people in Pembrokeshire and not really an outdoors scene like there is in Keswick, Ambleside and many other parts of the lakes. So it does take more work to get to find climbing/outdoor partners.
When I moved to the lakes I never joined a club as I met so many outdoors people at work, in the wall or pub. When I moved here, joining the climbing club was definatley a good step for finding partners and making friends. There is a canoe club and running, cycling surfing clubs also.
The climbing is great, and accessible, down here people thing a 25 mins to mowing word or rusty walls is along walk in. As you probably know climbing below E1 is a bit limited and you could run out of quality routes in a year or two of getting out regularly. Plenty more to do once you get into the low - mid extremes.
Year round climbing is a lot more pleasant, surfing is a good additional activity, and I do love living by such a beautiful part of the coast, but I do miss the mountains sometimes and it is a slow 3.5 hours drive to Snowdonia.
Hope this helps, let me know if you have any more specific questions. Where are you likely to be living?