In reply to GuyVG:
Well I've only been for one day and only to the Conger area but I'd say it's a pretty good starting point. It's easy to find (there are two great stonking pylons where you turn off the clifftop path), the water is very deep, fallout zones are safe, routes are easy and top quality, plus there are good viewing points from the clifftop so spectators actually have something to spectate.
We camped on a fairly hidden spot on the clifftop but got kicked off early the next morning by a grumpy land tenant (who actually tried to charge us £10 each tent on the basis that the nearest campsite costs £5 per tent and we had a better view - I actually can't fault her logic). For a larger group we'd be best walking a mile or so to the nearby campsite rather than risk causing any more grief for the farmer.
Let's make it a date then - weather permitting, we'll be there on Aug bank holiday!