I lived in Britain for a decade.

Amazingly, in my experience not a single one of those things is true in practice.

• Britain has First Fast The Post, and unelected second house of Parliament and Head Of State. The current government has a parliamentary ABSOLUTE majority (in a country with no written Constitution, so the pretty much can enact whatever laws they want with it) when they only got 33.7% of votes cast.
• To see Britain’s “Rule of Law” just look at how the one group of demonstrators against the Genocide in Gaza were deemed Terrorists because of nothing more than throwing paint at an airplane used for surveillance in Gaza.
• Harder to explain: culturally Brits - especially middle class and above - see people as having a moral obligation to fit in, which is how you end up with things like demonstrators being arrested for “Disturbing the Public Order”.
• Just read how Muslims are described in British newspapers. Also talk to any friend of yours in Britain who has an ethnicity other than white-Briton.

British values are almost all of them related with “keeping up appearences” (hence the whole “stiff upper lip” thing), the inherent superiority of Britain and Britons and how “people should know their place”.