In reply to Tom Peckitt: Rob isn't one to overhype the quality of stuff. In fact unless it's pretty awesome, he'll say so (or not bother doing it). The way he was enthusing about Preperation H makes me think it must be something pretty special. If you can climb font 8A, I'd say it'll definitely be worth the drive.
Apparently Northern Soul (the 7A next to it) is one of northumberlands finest