In reply to jefflau:
Hi mate, southern sandstone is pretty much a right off in winter. Unless you get a week or two of dry weather the rock will be damp and fragile. It's a very delicate sandstone and gets trashed if the rock is at all damp (even if it looks dry).
I lived just round the corner from Morden for about six years so know it's a crap place for climbing but you can get to the Peak District in 2.5 hours, especially if you're travelling early in the morning. That's only an hour further than southern sandstone. It has quick drying rock, better climbing, and you won't get lynched for trashing the place.
I loved Southern Sandstone on a nice summers evening but it really isn't the place to be in January after the wet winter we've been enduring.
Hope you get out somewhere
Deacon