In reply to MattG:
a brilliant day out!!! do it...
I'd recommend all climbers can lead HVS, seem to remember there being a few in-situ campicescrews and pegs - but the belay above the 'crux' was pretty sparse - determined by the strengh of your thighs against the ridge... great fun!
I remember finding the chalk surprisingly solid - placed a few friends in the cracks and the odd peg - but beware of the flints - we had a few foot holds go..
Take lots of slings for spike runners.
We climbed in rock shoes. We had problems on the first pitch as it was so slimey... had to wade out during low tide ...
Had 3x50m ropes tied together for the abseil - it was recommended to us to leave the ab-rope there with jumars/prussiks in place 'just in case' - I think that's a good idea.
Whatever you do don't forget the camera!!