Interesting that you would note that you lived in the "UK" for five years. My family lived there too - Lowndes Square, London, near the Knightsbridge Station - for about 5 years too. I was in college then, so I don't claim London as a home, but I was a frequent enough visitor to know what island I was on. Funny how you missed that. Were you in a drug-induced stupor at the time?
I lived in the UK for a few years without setting foot upon Great Britain. I knew where I was at. I even knew what country I was in, unlike you. It is a shame you did not learn anything while you were there.
You should try to tell a Catholic from Northern Ireland that they are British and see how far you get.
And they still issue passports which correctly identify the nation-state as the United Kingdom of Great Britain and Northern Ireland.
In cr #2825 you said "Great Britain exists as a nation-state." You were wrong then and you are still wrong.