Hey,
I have used OverBoard before for their waterproof cases for the iPhone and I must admit it was very good. Unfortunately I've not used their camera equipment so I can't comment on them although the
http://www.over-board.co.uk/waterpro...ase-black.html does look pretty good.
Alternatively I've bought a fair few camera cases from LoveCases in the past and they do have a wide range of
camera cases which are designed to be waterproof...although too my knowledge none that let you use the camera under water.