The Difference Between London, England, Britain and the UK

Some people say that he's not Charles's son. He's actually the son of, what's his name? James Harriet? No. I don't think she was that popular. They'll never try and prove it with a blood test. It could be true. And if it is true, I still don't care. I still think that Harry could be the king. We could talk about this royal system more, but there isn't time right now. Next question. What's the difference between London, England, Britain and the UK? You have seen my stand-up set, so you should know.