How to maintain a freediving hobby living in London?

Hi everyone! Keen to get some advice from other vity dwelling people engaged in the hobby.

I did freediving a few years ago in the Phillipines and loved it, and I have a 10 day solo trip booked to go to Dahab for an AIDA II course and some additional dives.

My dilemma for when I return, is I live and work in London, and I am now stuck wondering how I can best build a lifestyle to continue my freediving hobby.

If I have weekends and infrequent holidays, what are good spots to visit? Are there good Freediving communities in London? And are their places on the coast of South England that I could dive with other groups in? Any insight from others would be amazing.