For any new UK users to Lemmy, consider making an account over at Feddit.uk. It’s an growing instance with a specific community focus on all things UK!
I’m not a admin of that instance, but made my own account after Lemmy.ml became too slow to use and the difference is night and day, at the time of writing.
Of those I think only beehaw.org is US-based isn’t it? lemmy.ml and lemmy.world are European (I forget where, and I don’t really care so there’s no need to tell me).