"Designated Survivor" and COG/COOP

UK COG plans are, as far as I'm aware, to evacuate the cabinet at the earliest sign of nuclear attack, to one of their nuclear bunkers out in the countryside. There's a few big ones. The Queen, everyone assumes, would probably survive. Either evacuated to a castle in Scotland at the first vague sign of nuclear attack, or into a big nuclear bunker under one of her palaces, since I assume there is one. In the aftermath the central government doesn't expect to do much, because in the event of nuclear attack command is passed down to local area controllers, who basically have a little disaster control bunker with their committee. Every county and city is supposed to have one, I don't know if they still do, it was scaled back in the 90s. Anyway, they exercise pretty much total control over their area. The police and armed forces fall under their command, and it's their job to sort out their area. They've got officers on their committee for food, medical care, housing, all that sort of thing. Then they pretty much just run their little area independently until communications can be reestablished with central government (if they're still alive) and sort out a big plan. I think there's also slightly larger authorities somewhere between the area controllers and the government, who control everything happening in a large area. They have a big bunker that has literally everything. Armoury, RAF fighter control, home office, communications, their own switchboard, hospital and representatives of every government body, armed force and emergency service. The Commons and Lords would probably be adjourned indefinitely until it can be reestablished, as we can expect parliament to be wiped out and most of the Lords and MPs killed. The role of the Queen (or King, if she was killed) would probably be bigger than usual, as a national figurehead and whatnot, and she could theoretically take over the government and rule autocratically, since a nuclear attack is an anything goes situation, but the Prime Minister would probably take over total rule on behalf of the crown, as he usually does anyway (without the total part). Naturally elections would be cancelled indefinitely as well. Also all food and petrol supplies come under the control of the armed forces, as do airports, railways, roads and ports. Basically you're looking at martial law under an area controller with central government just trying to reestablish comms to do the wider rebuilding afterwards. It's also possible that policemen and firemen would be armed. There's a famous TV movie, called Threads, that was about a nuclear attack on Britain. Being very pessimistic, it had even traffic wardens being armed to help keep order.

As far as I'm aware, the Queen is just a figurehead,and doesn't influence government business, but I'm guessing people would look to her for answers if something like that actually happened in Britain. She is very well known, and it would be advantageous for her to assume the role of head of Government in time of crisis, as it's always better to put a face to whomever is in charge. It would put the regular person's mind at ease knowing exactly who is in charge of the situation.

I really like the premise of that show, and it sounds like something I would watch.