The second of three prequels to the new series of Doctor Who has been released online, you can watch it below. It takes place before the events of the third episode of the series, The Curse of the Black Spot:
One more prequel is to be released during the course of the new series. In addition, a new trailer for the next episode of Doctor Who, titled The Curse of the Black Spot, is currently airing on various BBC channels inbetween show breaks, you can watch it below:
Doctor Who: The Curse of the Black Spot will broadcast on Saturday 7th May at 6:15pm on BBC One and BBC One HD.