That is a very interesting question.
Most broadcasters in the United Kingdom are governed by primary legislation, by acts of Parliament. The BBC is unusual in having a charter. It has always had a charter, and I think this is the seventh or eighth charter that's been issued. I think the reason we have a charter rather than an act of Parliament is that the feeling was that a charter would help to defend the independence of the BBC. It's granted to us by Her Majesty The Queen, admittedly with the advice of government. But it isn't something that is subject to amendment line by line.
This has been a tradition in the U.K. I suspect that if we were starting again, we would probably be governed by an act of Parliament rather than by a charter. As I say, this is our eighth charter, and it has been the tradition since we began in 1927.