Oooh, always fancied this - it's supposed to be quite a weird experience. We would def be up for it. Could be combined with some south coast diving for the northern contingent who are afraid of a little drivin'!
Come on, 30m vis and a freefall descent to the bottom. You could always pretend like you're James Bond....
if you really fancy it and the YD brigade dont then have a look at Divefun I think they have it in their calendar. I have to be honest here if I'm gonna get Narked I want something out of it i.e. a bit of scenery.