Here is the (two dimensional) political placing of the parties in the forthcoming UK election from Political Compass....
If you thought you didn't have an awful lot of choice, the fact that all major English parties are (on this assessment) siting in the blue (Right/Authoritarian) quadrant will confirm that suspicion
Edit: SNP offer an alternative in Scotland, of course! (apologies for missing this earlier)
@ChrisMayLA6 @melanie @PoliceStateUK This... looks bad... I'm in the US so forgive me...
@kshernandez It is bad. However, your main two parties are both off the top right of the chart I always find it weird when US people accuse the Democrats of being 'leftist'
@PoliceStateUK Yeah, the goals of the parties tend to change over time... it's very weird. Or should I say, values?