In reply to payney1973:
> (In reply to Foxy) Two that spring to mind are London crag on the ogwen valley, and I can't remember the crag name but it's in the cromlech area on the llanberis pass, opposite side of the road from the boulders above the s bend towards pen y pass.
This will be Dinas Bach, on the south side of the Pass, a little way up from the Cromlech Boulders. A quintessential little one pitch crag, unique in that respect in the Pass. I have a very vague recollection that it
did actually have some connection with one of the London clubs, and may even have had that nickname.
The other very good single pitch crag I can think of is Bochlwyd Buttress in the Ogwen Valley.