What is there to explain? Your examples make no sense, aren't even bad things, or are purely anecdotal. For example, that smart people from Southern Europe can move to London and thrive is something Britain can be proud of. There certainly aren't any immigrants moving to any continental European countries and getting the top jobs, they're invariably reserved for the locals. The fat coke thing is nonsense, it's just a turn of phrase, that you never came to understand that says more about you than anyone else. Having a shit tax system like the household vs personal income thing is nothing unique to Britain. And if Britain was so uniquely poorly governed, the continental countries would be wildly better governed, but they're not. Some are, some aren't.
Anyway I don't know what happened to you in the UK but I'm sorry that it did.
Anyway I don't know what happened to you in the UK but I'm sorry that it did.