In reply to zimpara:
Thank you for making a decent topic..
Anyway, I was out in North Wales on the weekend, and was expecting my walk to be a bogfest - however was pleasantly surprised when it turned out to be quite rocky, and I did see quite a few bits of clean rock. I'm sure there are plenty of other hills, with minor crags that people just haven't bothered to go and climb everything on. Anything with boggy walk-ins over 2-3 hours might have a few bits left.
For example, here's one crag that at least has missing routes on UKC (it only has 3 routes) (I've no idea whether there's more routes in some archaic comprehensive guidebook):
Pen Llithrig y Wrach (Crag)
Here's the current 3 routes as a topo:
https://ukc2.com/i/266444.jpg
As you can see - plenty more to go at there.
Edit: If anyone is keen one weekend to go camping and try a few of these type of routes for the possibility of a meaningless FA - I'm game. I've got some good route names I've been thinking of...
Post edited at 11:57