The Brits, like us Yanks, find it easier to blame others - preferably different skin color - for their problems.
The UK has had bazillions of others since the days of the empire, long before Isis or anyone else. And, Fing surprise, they were blaming them too back then.
Instead of growing their economy they focused on coasting along. That did not work as the Germans didn't.
The refugee crisis today is simply the result of not doing anything in the Middle East for decades, and for interfering with Middle East politics for centuries beforehand.
It's a pity the country that gave us Pink Floyd and Alan Turing had to come to that, become an isolationist little hamlet in the grand scheme of things, all because they couldn't reconcile history.
I suppose the Brits were ok with their empire ruling and pillaging the little colored folk a couple continents away, but Fing surprise Sherlock, the little colored folk all of a sudden came calling.
How fitting. You reap what you sow, karma is a beach...