Good point. In fact, that's a VERY good point.
In the on-going reorganization and merger of the BIA and the Foreign Office, it actually became reincarnated as the 'Americas Directorate'. But people are still using the old-style nomenclature out of habit. And how the Directorate will ultimately manifest once the merger is complete is anybody's guess. Not even they know at this point. But since the odds are that UKvisas (Or Borders International, or whatever) will emerge as a directorate in its own right, the future role of the Americas Directorate is less clear. I wouldn't give out a fax number on the internet because we have been asked not to do that.
So if you are having trouble finding someone to cc, then just go with the consulate. If you had any difficulties with composing your text, you can post a redacted copy here.