Shattered posted... I'm British, I live in the States but all my family still lives back in the UK.
Both Labour and Conservatives are atrocious but Labour is the slightly better option (but may still be just as bad depending on who you are). You're basically picking between a right wing party that used to be central/left and a far right wing party who used to be right.
Labour only won because of how awful a job Conservatives did over a prolonged period of time. And it's extremely telling that it took until the last election for them to win given that the conservatives were just as corrupt and incompetent the previous cycle with it broadly out in display.
My Dad actually voted for the third option which you would think 'Hey, maybe a third option is be better?' but nope, it's a nationalist party so just as fucked up.
For a lot of people there are no good options.
Do I even dare ask about the Greens?