Yes, RNCM used to have a great jazz policy, but since the retirement last year of Mike Hall who headed that part of the college's activities, I haven't found any gigs I want to go to.
https://www.rncm.ac.uk/people/mike-hall/
Mike is now leading a great little band called Boplicity, which I saw at Malcom Frazer's house on March 15th, just before the great lockdown. Probably the last jazz gig for a long time.
Here's a clip from that gig:
https://www.youtube.com/watch?v=pkxbXp_iPps