Solarpunk

Odd tbh, the only flyers and stickers I saw was Snapchats for buying weed and the occasional TERF one.

The only record store I saw was operated by two elderly men who seemed extremely irritated at the fact they had customers and especially me (store's in Notting Hill), and low-balled harder than pawn stars (I needed money to get to work once so had the misfortune), they also seemed to be part of a chain.

At speaker's corner I def saw political orgs too, but it was either anti-vaxxers/anti-maskere or TERFs usually.

I did find one cafe in Islington with pride flags, but there wasn't anything besides that, certainly no "bulletin boards" and the coffee was the most disgusting swill I had, don't think I've actually seen an independent book shop that wasn't Waterstones or WHSmith in my 8 years living there.

Only thing I saw close to a community centre was a mormon church, which was never open, but often had entertaining crazy spiceheads outside of it that would chase people down the street on occasion.

I guess it depends on the area. I was also advised to look on Facebook, which is a good idea as I've never been on there before. Thanks for sharing your experiences.

P.S. Btw just to avoid confusion in the future: "City of London" especially when capitalized in this way as a specific name is actually a bit different from "London": it's a district within London https://en.m.wikipedia.org/wiki/City_of_London semi-autonomously operated by the CoL Corporation, judging by you mentioning Speaker's corner I think you meant just London https://en.m.wikipedia.org/wiki/London which is the stuff around the City of London.