I'm a German National, so no, they won't extradite me.
If the UK had remained in the EU, then extradition might be possible (depending on whether courts approve it) but right now it's pretty unambiguously impossible.
https://www.gov.uk/government/publications/international-mut...
Apparently Germany is also (at least as of 2023) not extraditing non-citizens to the UK due to the condition of British jails as well so: https://www.theguardian.com/society/2023/sep/05/germany-refu...
I have no idea if this is a likely or even possible consequence, but that’s one way lots of people have gotten ensnared by the long arm of the law, even when jurisdiction is otherwise normally lacking.
You'd be well advised to avoid a country this like.