Forgot the real reason I was posting. Jeannie, he BBC World Service has been using the "twenty-o-five" format for at least three years. But for once Auntie is not consistent across the rest of her output.

If we are to be ruled by precedent, we really need to know how the decade 1000-1010 (sorry Autolycus) was styled. Without that information I'd settle for the noughties for where we are now - already widely adopted by "cooler" broadcasters - and the teenies for the decade that follows.