The Blacks at Gisburn are far harder than Llandegla black.
Dragons Teeth, Bigfoot Slap (& Climb it dab free), Hully Gully (not hard), Log Ride (insane), Black Diversion on Swoopy (A scary drop but the real skill is to get up on the other side),
Leap Of Faith (risk & skill level is in another world compared to anything else mentioned so far)
Blacks at Cannock – All very short sections, some of them not too bad, some of them very tricky and carry a high level of risk. Far harder than Llandegla’s black.
Lee Quarry Black – known on strava as “Into the bowels of the Beast” – far harder, Extremely rough, Very rocky, Very exposed, high level of risk.
Antur Stiniog – Black Powder and Y Du are on a different level to Llandegla Black. It would definitely be a Red at this place.
Note that I know Gisburn, Lee Quarry and Llandegla well as I’ve visited them all many times but the other locations I’ve only been to twice.