Just a heads up, haven't seen anyone talking about this. Picturehouse cinemas in the UK are screening Aliens tonight [9th May], all the showings I've looked at start between 8 and 9pm. One night only, something to do with Empire Magazine turning 30.
Picturehouse venues are pretty few-and-far-between, but there's a list of them here:
https://www.picturehouses.com/cinemasObviously it's super short notice, but I only accidentally stumbled upon this a few minutes ago.