The end? No. Well, in name, maybe. But for a whole movement towards nationalism, racism, and other prejudice; this is only the beginning.
Mainstream politics is going thru a slow death. I say this as someone who taught politics for a decade. It is a tool used by people of a particular generation to get things their way. That generation is ageing now and beginning to thin.
For the following generations, traditional politics is not a mechanism to get things done. That will fall to social media and civic action. Whilst social media is highly federalised, it can be lead by individuals with (even short term) gravity. As a species, we still tend to see truth in repetition; those who are best at blasting the message will get people to believe and follow. This is very easy on social media. Example - the two people killed by an angry mob in Mexico at a police station owing to fake news over why they had been arrested.
At the moment, UKIP follows Daily Fail sentiments opposing multiculturalism and similar concepts. Other groups will soon start a hefty push back against MeToo, Gender Identity, and all sorts of other popular prejudices. Then there will be the scapegoating, where the frustrated are fed a constant line that their struggles are due to group X. This is what UKIP did with Brexit. The reality was always that the UK has an ageing population - that means a shrinking workforce and a pensions/social care bill that's about to mushroom. You pay that bill either by expanding the workforce or by taking more money off the workforce. UKIP somehow persuaded those on low wages, that the solution was to make it harder to grow the workforce.