In reply to Dave Williams:
I've added some topos to my photos:
http://www.ukclimbing.com/photos/author.html?id=122815
If you have time, could you have a look and see if they match your understanding? To me, this seems to be the best match to the names and descriptions but some of the lines aren't clear (Cracked Slab and Rattly Block particularly, and I'm not sure where exactly one crosses the overlap on Overlap Slab as I didn't try it).
If these are correct, I'll do a neater version to add to the crag page. I think they could do with a few more ticks to get the grades right. Thin Crack (as I've labelled it) doesn't look like a HS 4b and my version of Twin Cracks was more Diff than VDiff. Greg's Kettle is appallingly protected (at least with my gear placing) so probably merits VDiff for boldness but not difficulty, although you can escape left so perhaps that negates the boldness somewhat.
Post edited at 17:41