I'm not so convinced. There would be still "uk.co.bbc" and "com.bbc" pointing to the same body behind it and any kind of confusion arising from this, like, "is 'ug.co.bbc' the same?" The most important part is teaching users that the identity isn't just "bbc" with some extra decoration. Also, we have the reverse example in software packaging (com/example/disruptiveLibrary) and it isn't fool-proof either (especially, if you only know of "disruptiveLibrary" and not about its origin).