Comcast added BBC America to it’s standard package about a year ago or less.
On a side note, BBCAmerica is running lots of past episodes from seasons going back to the moder season one, with Eccleston. I have been VCR ing them and find it interesting that they have avoided showing certain episodes, preferring instead to just re-run already shown episodes from a couple of weeks previous and showing sequels out of sequence. I intend to take the episodes from VCR to disc anyway, so I can get them into proper sequence when I recopy. I want to have my own accumulation of Whovian episodes going back to the entire Pertwee, through Baker and up to the present Matt Smith (and Alex/River, of course). There has been some very good writing throughout the long run of Who. There has also been some drek, and the incursion of perversion was most telling of the filthy minds which switched to writing for the degenerate Torchwood series.