As I said earlier, with a free proxy server you can get every BBC program right now. I did this for years before Dish, DirecTV and ultimately my cable company carried BBCA in HD. I could watch everything earlier and in HD this way (Downton Abbey, Top Gear, Doctor Who, etc.). I use ProxySwitchySharp in Chrome and find a server on the various free UK proxy lists. Chrome switches automatically when I go to a UK site. If you have slow internet, the SD version still streams pretty well. TOR also works, but is much more complicated to set up.
Those of you considering OTA on a budget, look at the $40 iView DVR or HD Homerun. I still have cable rather than OTA, but my Windows Media Center system works beautifully and is far cheaper than Tivo, especially for my 5 TV home.