In reply to Frankie boy:
Clifton is hardly any effort to get to if you are in the area anyway as it's only 10 minutes from the road. The brambles are a bit of a pain, but the trick is to base yourself at the top of the crag and descend or ab into the various buttress - and the left-hand buttress is clear of brambles anyway (and consequently quite popular). It is just a short roadside outcrop (14m max), but the routes are very good, particularly the likes of Jeune Ecole (HS), Dirl Chimney (VS) and Wall Street (E1).
Unfortunately, the best of the Gallway climbing is in the hills and the best of what is there entails a long approach, though if you have bikes, it's not too bad for a day. If you do have bikes, I'd recommend a day at the Dungeon of Buchan (the best crag in Galloway, in fact probably the best crag in the Scottish Lowlands)
http://needlesports.com/NeedleSports/Galloway/dungeon.htm or the more recently developed Point of the Snibe
http://needlesports.com/NeedleSports/Galloway/craignaw.htm#snibe. Both these would mean parking your van at Craigencallie which has a crag with a few good routes but mostly a lot of mossy ones (
http://needlesports.com/NeedleSports/Galloway/craigencallie.htm ).
If you don't have bikes, consider a day at the Clints of Dromore (nice parking sport for your van near the old viaduct from where it's only 15 mins to the crag):
http://needlesports.com/NeedleSports/Galloway/clints.htm . The other crag that's even closer to the road is Craig Dews but the routes are variable in quality (
http://needlesports.com/NeedleSports/Galloway/craigdews.htm ) - there are more routes added here recently (see:
https://www.facebook.com/groups/189847150690/ ). Also close to the road but not worth visiting during the midge season is Corwar:
http://needlesports.com/NeedleSports/Galloway/corwar.htm .
Of the seacliffs, Crammag is very pleasant, and granite, rather than greywacke, but parking will be a problem, theough the farmer is very friendly and may well let you park in his yard.
For all these granite crags, a double rack of cams is a great asset as nuts and wires are generally hard to place. All the descriptions are in the SMC Lowland Outcrops guide (except for Point of the Snibe, for which see the link above).