Netnub:   " ... EU is fighting desperately to keep them in." 

NO, it isn't. The unelected functionaries in Brussels are having too much fun pounding their chests on how they will teach the UK (and incidentally any others even thinking about leaving) a lesson on how expensive and catastrophic it will be to them. Merkel, that overrated do-nothing drone, didn't have the courage to intervene and get Cameron the concessions he needed to win the Brexit vote and still does nothing but parrot the nonsense of the EU hawks. Yet it is Germany that will lose the most from the UK leaving; it will lose its most important supporter of sensible economic policies and a realistic structure of the community. 
Look forward on the southern weak members doing their best to access Germany's earnings to support their own inability to get their houses in order.