In reply to Bolehillbilly:
That's great to hear. And if you were involved in the access negotiation - thank you very much! Somehow it's nice to stroll around the outside area of the Stone Centre and have a look in the various quarries without worrying you're about to be told to clear off by someone in a hard hat and a high viz tabard. Whilst the rock isn't perfect it's an oddly pleasant spot. The coffee is nice in their cafe as well.
Even last Tuesday, which I guess is only a holiday for teachers like me, there were loads of folk in Colehill, a team getting ready to climb something in NE Quarry and we went to Coal Hills and there was another team that arrived in the time it took me to redpoint Mithered (5c), the crag's warm up. I know. The shame of it. I'm currently blaming the lingering effects of a nasty virus I had a few weeks ago. Surely there has to be some reason beyond me being even more rubbish than normal when I'm failing to onsight 5c! <facepalm emoji>