Okay, this discussion has been open for long enough. Time to close 'er up. So-called "in-universe", BBC-operated websites are henceforth declared invalid. However, because they are official, information from the websites may be included, if properly cited, in "behind the scenes" sections.
If you'd like to help cleanup pages in light of this ruling please go to Tardis:WEB cleanup, a page that's been set up to help with collaboration on this project.