"Scottish Breakaway" is here in previous thread.

But not that verse, Steve - and I still can't remember the third line. (There were more -including ione about Princess Margaret: "Her sister Meg has a bonny pair of legs" - a bit dated now though.)

The other relevant date, Susan, is 1603, which is the year the King of Scotland became the King of England as well, bringing about what was referred to at the time as the United Kingdoms of Great Britain, that being the name of the island. As for Wales - well that was never a Kingdom, but a Principality, and there's never been a King of Wales. I suppose that's the excuse for not having it represented on the flag.