It’s the tories/conservatives. They love this sort of total authority stuff. They’re also keen to bail on intl human rights orgs because it limits what they can do to migrants.
(Note that I am not defending the Tories here)
I've never seen it this bad in the UK.
The Home Office was described by a former Labour Home Secretary as "not fit for purpose" (and he promptly broke it up). That's the only time I can recall a Home Secretary not following the Home Office's repressive, xenophobic attitude.
New ministers undergo an induction ritual with their civil servants; they are told what polcies are favoured, and what policies are no-go. They are confronted by a succession of generals and spies, explaining tothem that the world will fall apart if they don't toe the departmental line.
I'm convinced that this induction ritual is performed most thoroughly by the Home Office. Apparently-reasonable politicians always turn into authoritarian nutters when they become Home Secretary. I assume that the process amounts to blackmail: "The Prime Minister wants repressive policies from this department, but with deniablility. You are that deniability. Rest assured that if you don't toe the departmental line, you will be fired by the PM."
Perhaps, but I'm inclined to believe it starts-off with someone leaving a copy of the Daily Express around where someone else might possibly read it.
Episode 1 covers the Home Office: https://www.youtube.com/watch?v=TyGhg8BmECw
~12 minutes in, it covers the Home Office civil service culture.
I have a low tolerance for ads and propaganda!