All tradition aside, the UK army is much too small to even try to exert civil control, even if was all at home.

Generally, they've got the same option we do; takeover by a party interested in dealing with things are they are, rather than fighting about which settings to use on a doomed status quo. Rather like going off the gold standard after the Great War, the sooner the better.

Also if the cessation-of-trade Hard Brexit happens, it doesn't take very long for people to starve. In that case I'm going to be highly surprised if it's not a successor state or states. And that's the sheaf of outcomes that has "nuclear blackmail" in it, which, well.

I stocked up on shaving soap around Christmas because it's made in the UK and, well, prudence. There was a risk. I admit I was not expecting things to get anything like this bad.