This thread is old, but I am interested if you went, what boat and shop you used, how you got there, and would you do anything differently to improve your next trip.
Flying into Kirkwall, did you face a 66 lbs baggage restriction, or were you covered by being connected through an international flight?
Unless you want to pay way over the odds, the best bet is to book directly with the baot skippers themselves ( the only quote I've seen from an organised US trip, was 3x the cost of doing it independantly) - which is the normal way to do it here.
By preference I would tend to book with one of the bigger liveaboard boats, as they will usually spend a couple of nights tied up somewhere other than Stromness, and they are generally bigger ( and not much different in cost) - I think the cost is around the £300/week liveaboard - but I'm not up to date as we tend to either just go for the weekend or nip accross on the rib
Karin (
Scapa Flow Diving, Orkney & John's Charters - Scuba Diving ), Halton(
Halton Charters (01856) 851532: Diving in Scapa Flow), Valkyrie(
mv-valkyrie.co.uk), Jean Elaine or Sharon Rose are all good boats, with good skippers who have years of experience between them.
Liveaboards are very basic compared to the US, however it takes all the hassle out of moving stuff around, and the extra hour in bed is very nice!). However, unlike the US there are no divemasters, nor will you be buddied up with anyone, so either take your own buddy, or dive solo, which is accepted practice.
Normally 2 dives a day, some boats stay out all day, most boats will required dsmb's.
BA no longer have the franchise, it's now Flybe, so expect to get shafted on excess weight - there isn't a direct flight from London, you'll need to change at either Edinburgh or Aberdeen - both have reasonable connections