In truth UKIP are simply a bunch of disaffected Tories who dislike David Cameron and the direction of the party. They are a protest group who could never actually govern.
The danger is they appeal to the basic instincts of that class of voter who still believes the British empire rules the world. Worse still their rhetoric also appeals to the ‘Alf Garnett’ blue collar working class with all their prejudices.
I don’t doubt they have a large following in Britain and have the potential to lead the country into disaster. That’s a symptom of the failure of successive British governments to deal with the excesses of the federalists Europeans.