In reply to PRT91:
Blackstone Edge is a beautiful spot. Treat it gently, as it is well loved. As others have said, Lancashire Bouldering is the correct guide.
If you go in the morning, you may see a congregation performing a ceremony in one of the quarries, as you walk in. If you go in the evening, you may see owls circling above the long grass.
Lots of great 6A to 6C problems, and some harder too. "Hueco blocs" or "Home Improvements"/Back Edge are good places to start.
Some remembered part of me is still wandering up there on that windy edge alone above the strewn lights of Greater Manchester.