Yes, I most certainly do. Ukip's belief system is pretty fundamentally palingenetic ultranationalism at its core. (As is "Make America Great Again [By Making Sure White People Win]".)

EDIT: but, gosh, I sure can't help but notice the first part of the sentence you cherry-picked: "Fascism (/ˈfæʃɪzəm/) is a form of radical, right-wing, authoritarian ultranationalism" - can you tell me why you tried to play dirty pool about that?

EDIT 2: ha, sibling poster got there too. Nice, dude.