The Conservative party is seen as being for the very rich, and a party that harms the most vulnerable in society. The current leader said that most people think of it as "the nasty party".

The Labour Party is now in a state of constant infighting, with most people not trusting it on the economy (because it was in power during the financial crisis) and as being weak on security.

The Liberals went into a coalition government where they fucked over one of their core support groups, middle class students, by raising tuition fees when every candidate signed a pledge saying they would vote against a rise. They're now almost completely irrelevant after the last election reduced them to less than 10 seats, my aunt doesn't even know who the current leader is and she's voted for them her whole life.

UKIP is considered to be a racist and xenophobic party by many, and has no real policies outside of leaving the EU and reducing immigration. Has no real well known figures outside of Farage, who's widely disliked and has just resigned.