In reply to wilkesley: I have both the first and second editions of the West Mids guide, and it is a shame it's not available now but, having said that, the info in even the second edition is rather out of date these days. I climbed at Nesscliff and Llanymynech yesterday and particularly the latter is a very different crag these days compared to how it is described even in the 90s West Mids guide. And even the Nesscliffe routes have been significantly reappraised it seems since then.
I suspect for the real esoterica, people putting the cliffs on 27crags.com and crowd-sourcing it to get that as accurate and up-to-date as possible is the answer until some enterprising Brummy wants write a new version of the guide. I took a bunch of photos from Southstone the other day so I should put my money where my mouth is and 'topo' that cliff on 27crags!