Im in full agreement about diving in the uk - just dont bother. All you will see is algae, kelp and maybe the odd cortina...... the stoney cove crew go mad when they see a solitary lobster

wow!
Save your money and go to the red sea or indian ocean.
So far my favorite dives have with a whale shark in the national park in sharm, in the middle of a fish ball surrounded by sharks in the north male atol maldives, manta ray cleaning station in maritius and in a reck surrounded by tuna in the seychelles.
IMO dive computers are not to be encouranged for inexperienced divers (under say 100 dives). Much better for them to work out how to dive correctly relying on the skills taught in the course before becoming lazy with the gadgets

dive computers tend to make people ignore their dive planning skills
If you want to do underwater photography choose that as one of your specialties in the advanced open water advanced course, then get yourself a little compact digital camera and housing. I use a canon ixus 750 with a 2 gig card. Its never let me down.