Fade away as it's centralized too much power and may be acting in an autocratic manner... So it's said.
They may not be the bad guys, but some search results said they are much like the Republican party here. So your Tea Party category may fit very well. Some of their videos are applauded by Paulites.
Here are the Convervapedia results:
http://www.conservapedia.com/United_Kingdom_Independence_Party
I honestly don't know about them. There were once charges of racism laid at them but I can't find much in search results now. I have no objection to people in the UK wanting to maintain their sovereignty or government just as I have no problem with people here wanting that.
I don't think we are in any danger of such a thing, and don't know how much the UK has been affected as I don't believe they ever completely signed up. If they were, and leave, it won't be the end of the world. Some other countries did not join, either.
It's just MHO that the trade or finance agreements that have been made in many countries under international treaties have been causing some absurd situations to develop. There are good and bad things about globalization. It depends on if one is being impoverished or enriched what the gut reaction is. I suppose the EU was Europe's verion of NAFTA, etc.
For example, we are having food shipped here from the other side of the hemisphere or globe based on the idea that it is cheaper. It's not really, and it's not green to ship food all those miles to a place that can grow its own. And it likely profits international corporations more than the consumer or the producer. It takes local control away. Europeans will decide if the EU is good thing for themselves, certainly not us.