The main competitors:
The Conservatives, or Tories (Right, or Centre-Right)- leader- Prime Minister Theresa May
May was appointed PM after the former PM, David Cameron resigned. She's campaigning on the idea of strong and stable leadership, but won't agree to debates.
Labour- the opposition party (Left or Centre-Left)- leader Jeremy Corbyn
Corbyn is also a controversial leader- he has dubious support from his other MPs, but a lot of support from his base. Sometimes seen as too left wing from a party that last got elected under a more centrist Blair.
Lib Dems- traditionally the third party in British politics (Centrist)- leader Tim Farron
The Lib Dems have a younger base than either the Tories or Labour usually, but screwed over their base in a hung parliament by allying with the Tories. Usually they're better at a local level.
SNP- Scottish National Party (Nationalist, centre-left?)- leader Nicola Sturgeon
Focus is very much on Scotland and its Independence from the rest of the UK. Powerful in Scotland, but doesn't run candidates outside of Scotland.
UKIP- (Nationalist, right, and far right, ostensibly UK party, but more anti EU) leader Paul Nuttal
Dificult to say who is really the leader on this one. Used to be Nigel Farage, Close to Trump in both politics and lack of organisation.
Plaid Cymru- (Welsh nationalist, left) Leader Leanne Wood
No standing outside of Wales, but Wales voted for Brexit in spite of it being one of the biggest beneficiaries of the EU.
Green Party- (Environmentalists- Left) Leader Caroline Lucas
They have a lot of fair bit of support locally, but struggle nationally. Bit of a mix of sensible policies and things that are kinda out there.
