courteneyfish: The islands were never going to vote yes. A fair number of their residents don't even consider themselves Scottish.
I'm guessing you mean the Northern Isles this is the latest I could find on Orkney from the census, but the trend has continued.
The past five years has seen a continued growth in immigration, with the English sector growing fastest. I would expect by the 2011 Census the percentages might be over 35% incomer with at least 20% of the total will be of English origin.
So a fair number of the residents are probably right.