In reply to Pete Scott:
My daughter went to that campsite with her scout group recently. Its a lovely spot.
I cant think of anywhere suitable around Torquay area I'd recommend. Most crags I can think of not really suitable for a group of kids to be abseiling off, due to difficult access, or lack of easy/safe access at top of crag.
But there's plenty of places in Torquay I haven't climbed so someone else is sure to have a better idea than me!
I'd suggest Dartmoor as more suitable location. Hound Tor or Bone Hill comes to mind.
Post edited at 17:06