IDK how they can wage a civil war, UK has nothing like second amendment protections, and gun ownership seems to be scarce. Maybe they can enlist the IRA to help with gun smuggling—seems like a natural alliance there.
PA Luty had a solution to that problem. Manufacturing would be crude and tedious, the hard part would probably be getting the ammo.
Sink Fein (former IRA) is a commie organization that embraced the immigrant hordes and the destruction of Ireland:
“Sinn Féin’s approach to migration is informed by our Republican values and principles – equality, economic and social justice, sovereignty, anti-racism and anti-colonialism.”
https://immigration.sinnfein.ie/