Oh damn that sucks. Things are a little better here, I guess?
The socialist workers party, who are basically entryist eurocoms who don't do anything and are a bourgouis party, pretty much
The RCP (who may be part of the same international as the party you are discussing) who are the revolutionary ultra left trots, they only good thing they do is they are good at social media, and have good takes occasionally sometimes
The Communist Party, the really old one, who just aren't too active? Like, I'm sure they do stuff, but I never hear about it
The young communist league, who do a lot of stuff (like releasing locusts in an arms convention) but don't do that much building of the communist movement (or so I hear) and are very small
The green party, who are ahead in polls as the most popular party in the uk rn and whose leader is a socialist but "doesn't want to discuss socalism", basically they are a soc dem middle class (primarily) org that has okay social democrat policies, and say they're anti zionist but their leader votes for pro-israel politics up until recently, basically they are doing vaugely left populism
The RCG, which I am part of. I mean, I like us, we do a lot of anti imperialist stuff but we're very small, much more invested in normal bourgouis methods of protest (think donations and protests rather than mutual aid), and shit at social media, though i am trying to fix that. We do have a lot of relations with Cuba specifically though, and the Ambassador from Cuba comes to our meetings sometimes, so that's cool.
But yeah, things certainly aren't great here. Lot's of people who would consider themselves left wing, no labour organisation. WOo