I live in a safe Labour seat so I normally vote for the Green Party. I don't want them to win but if they get enough votes they won't lose their deposit and the mainstream parties might adopt some of their more sensible policies.
Still a bit to the right of centre, but as I have got older I have become disillusioned with the more extreme right. I also don't think that Labour govts have never done anything good.
I prefer pragmatism to ideology. If the ideology isn't working or is actually harming people, people are more important and a policy should be amended. This can apply to both the right - balancing the books/low tax but underfunding healthcare, or the left - nationalising or subsidising industries to the long-term detriment of all.
I also deplore the excessive polarisation of politics in recent years.
I shall be able to vote again next year, and it won't be for the AfD, nor the Greens ...