In reply to Oogachooga: I don't know much about South Wales, but the best sport climbs I've tried at that grade were at Coastguard South on Portland. There are 4 or 5 at 6a around the climb Coming of Age, where you're on steep rock almost immediately above the waves. Maybe best left to the summer, though. At Cheddar, Easter Island has a number of routes at 6a and a couple of easier ones. Nothing exceptional, except that part of the crag does get full-on sunshine which makes it a good winter choice. Wyndcliff quarry gets full sun, too, and some of the 6a+ routes on the top tier are soft so worth a shot if you can get up 6a. There's also a 6a or two and some 5s. Again the selling point is the sun.