The two languages are getting closer together; television works both ways, with British dramas and BBCNews and BBCAmerica seen over here.

LOL England & America.. two countries separated by a "common" language. It does sound like something Shaw would have said.

Every living language undergoes change. Slang and jargon get added in and over the course of time become generally accepted. Or do you really want the Queen's ( or King's ) English to join the ranks of a dead language? Not gonna happen of course, but one should be careful about what they wish for.