So the UK pulled out of EASA because they didn’t want to follow them.
And then they still want to follow EASA rules and want EASA to follow UK rules (basically EASA) in reciprocy ?!
It is moronic, just accept EASA regulations like about the whole world. No one is going to accept a regulation regime that fundamentally diverge from either the EASA or FAA.
The hottest model now is flux, and the community is gravitating toward it after the failure of stable diffusion 3.
Tooling around it is still nascent and it is very demanding (12GB+ VRAM GPU highly recommended) so you could also start with Stable Diffusion XL, fairly mature at this point.