Forum:Torchwood Three or Torchwood 3

I've been looking through our Torchwood categories and articles and there seems to be a little bit of confusion over whether we refer to the various Torchwoods as for instance Torchwood Three or Torchwood 3. Is there any in-universe source that shows us one way or the other? (Or any other way to work it out?). --Tangerineduel 15:56, 15 June 2009 (UTC)