In reply to fire_munki:
If it's raining then carry on to Snowdonia (no more than an hour) loads of scrambling options at all grades, plenty go in the wet. The Beacon Climbing Centre is the best wall in North Wales (between Caernarfon & Llanberis).
I have climbed at Trevor and Trad at Pinfold, there are some good lines but bar pleasant walking countryside precious little in the way of wet weather options. So much more in Snowdonia, including lots of friendly grade Sports climbs on the Slate (try some of the levels in Australia like the Sidings) if that is an important element.