[colinicky]

I know that it can be done out of Eastbourne .We did it last year on Inspiration (rib) Damned hard work on a rib ! We did the first dive then motored East for about 1/2 hour for the second wreck expecting to then sit for 1 hour waiting for slack .When we arrived it was just about slack so by the time we shot it ,got kitted up we'd had a nice surface interval .As Juz mentioned Steve -Nauticat (www.channeldiving.com ) & Dave - Dive125 (www.dive125.co.uk) go from Soverign Harbour ,Eastbourne .Nice easy free parking & not to far to carry kit ! I have dived from both & recommend either (but you won't see me I hate hard boats !)
Good luck