Earlier quoted context omitted.
There oddly seems to be a concerted effort online to paint the UK as some kind of failing police state recently. This narrative seems to have really taken off with some Americans, who now seem completely convinced that the UK government is some kind of totalitarian oppressor who are snatching people off the streets. Meanwhile, Brits just look on at this narrative wondering what the hell they're talking about. Look, I…
I'm not American and I find the English legal system hilarious. In practically all countries a bunch of smart people got together in the 19th century to write a constitution but the British thought that they were above such petty concerns.
Many (most?) western societies have a similar concept for civil and criminal law with common law jurisdictions, where precedent is used rather than an explicit, exhaustive legal code. Effectively, the UK's constitution is to written constitutions as common law is to civil law.