Little guide been put toghether, which might be useful if anyone is visiting.
http://www.climb.co.za/2011/11/llandudno-bouldering-guide/bouldering itself is quite nice, but not world class. However, setting is sublime, and nice if you want a beach day with a bit of a play on the boulders, and is gorgeous at sunset (get there before 4 though, as parking can be a bitch).
Nice surf beach too, but you will need a wetsuit, as it's on the Atlantic side, and there is no place hire boards.
Will stick info in the SA thread too.