In reply to sethmford:
Peel crag/crag lough are the closest multipitch of length in Northumberland area. Great venue, though something of a niche style - stick with it if you go.
Though time wise, yorkshire limestone is probably as accessable.
Mostly bouldering up there, its that too high to boulder, not high enough to bother with a rope kind of area - especially the moorland stuff. Though there are some places with height granted.
Slipstones does have some outstanding gritstone bouldering though (better than the peak)...