LILAC of Leeds https://www.lilac.coop/ looks very cool, met one of the co-founders at coop event in Manchester, could put you in touch. No tech theme AFAIK.
Of course, Newspeak would be cool! You're in touch with John, might be worth booking a talk-slot there.
You've been to Talamh right?
I stayed at Earthworm coop, which is very East Wales, good if you go West side down perhaps.