I think UKIP might disagree. As I stated, failed analogy.
Pointing out a similarity between them, does not entail their equality in any other regard.
Svoboda and UKIP have a similar goal of detaching their respective nation from a current international political alliance.
You are right, they are fundamentally different. UKIP is a libertarian outfit, while Svoboda is a Jobbik-esque nationalist group. UKIP has no representation in British government, while Svoboda has 36 members in the Verkhovna Rada. Svoboda are no strangers to violence, whereas UKIP is not a violent group.
But the point had nothing to do with their ideologies or beliefs about government, merely their shared wish to alter their countries’ international stance. A move that has broad support in both countries.