Tim, I'll post my 'email' here, cause I've had a couple of PMs about same...
I dont club dive in Canada so i'm reluctant to 'recommend' any operation, but try visiting Scubaboard, the N American YD equivalant (but not as good!)... the western canada board is here....
ScubaBoard - Western Canada
Also get Carl Trepaniers book, Vancouver Area Diving Guide. A bible in these parts.
They're a good wholesome bunch, Canadians. My tip would be to tell them straight up about your UK waters experience, as the initial assumption is that everyone from 'Europe' dives in warm clear bathtubs and they look all pleasantly suprised when you turn up with a drysuit and so on.
There is a strong technical influence here, lots of twin (although they call them doubles) & stage stuff, so you wont be out of place asking for that kind of diving.
I'll call Brent at my lds later and see if they can do some recommending...
Just as a matter of interest, lots of visiting divers go straight to the Island. It's worth considering a couple of days diving the mainland. Vancouver Island is a bit, urm, sleepy? sometimes, so maybe give downtown Vancouver a try and dive in the Howe Sound for a couple of days. Combine some nightlife Downtown and great shore diving.
You could also, if the timings right, do some snowboarding and skiing on the local mountains which are hosting the 2010 winter olympic events (world class mountains). What could go wrong? Top quality snow, top quality diving, and top quality nightlife all within a 30 minute drive of each other!
You're coming at a great time. The water will be cold, the snowmelt will have finished (no more silt), and the mountains may be white......
I hate living here.
Hope that helps, gimme a shout for more.
Si