"So, sorry mate, you are a subject."

Thinking about it, Willie, it's probably the other way around. The monarchy exists by the will of parliament, i.e. the people. Therefore, Liz Windsor is, in fact, the subjects of the British people. This is what Charles l found when he was found guilty of being a "tyrant, traitor, murderer and public enemy", so the precedent is an historical one. Wow, that makes me feel a lot better, LOL!