In reply to belgis:
That quarry is going to be absolutely dreadful, I strongly advise you don't go climbing there! A 'crag' being on the UKC does not mean that climbing there is likely to any fun or even possible. Expect broken glass, used syringes, broken, overgrown rock, etc. Unused urban venues are not good!!
You'd be best off posting in the 'Lifts and Partners' forum for someone who wants to go to bouldering on those days who's got a pad and can show you around. I think I'll be around the area on those dates - give me an email and I could show you the brilliant bouldering at Caley or Almscliff.