I can't see them doing it, last time I saw a poll only 40% of Scots were for it. But if they do leave, it brings up a whole load of other problems. I assume they would want to join the EU because they would need the support to survive. But then would a country like Scotland be able to join at the moment as they would likely be a drain on EU resources (don't forget we pay a few billion every year to the EU which a lot of it goes to poorer countries to help improve infrastructure etc). Plus you have the whole Euro problem if they were to join, where goods in the UK would be a lot cheaper (Ireland has the same problem where a lot of people go shopping in N.Ireland because it is cheaper).