UKIP

UKIP was founded in 1993, and since its beginning, has campaigned to take Britain out of the European Union.
In 2015, UKIP successfully acquired 12.6% of the vote, which didn't earn more than a single seat but did undermine Conservative power- forcing Cameron into a Brexit referendum. The party has now broadly fallen to insignificance, winning only 0.1% of the vote in 2016.{1}