In reply to ned taylor:
I thought that the YMC definitive Yorkshire Limestone guide was still in print or certainly available in the shops. The Rockfax northern Lime and the YMC guide hit the shelves about the same time.
The Rockfax Clwyd guide is basically the definitive guide - the autor Lee Proctor occasionally posts on here. I don't think there's a current guide in print to the Ormes. The A55 guide covers the smaller crags east of the Ormes.
For the Peak, the Rockfax guide is your current best bet. No idea when the BMC guides to peak lime are due (if ever)
For South Lakes Limestone there's the FRCC guide to Eden Valley and S. Lakes Limestone. This is about 18 months old now.
ALC