In reply to Sonya Mc: Camping in Northumberland's climbing areas is a bit rare. The nearest for bouldering is Belford for Bowden/BBD. West Kyloe farm says it does camping, but I think they mean family camping.
http://www.caravancampingsites.co.uk/northumberland/westkyloefarm.htm It's 2km from the Kyloe crags.
There are caves in the Simonsides, notably at Sandbag Crag, which is in the Bouldering Guide. I used to doss in that one when I was a nipper.
People occasionally doss under the overhangs at Kyloe In and BBD.
Wild camping is a bit of a non-starter in these areas.