According to the Radio Times (buried in the small print), the final repeat episode is to be aired next Saturday evening on BBC4 - but make sure to check their website for the time, and don't just be logical and assume it will start when last week's did. The Beeb can get a bit Creative with their scheduling, and I've missed out before because of this. (Why they couldn't break down and - shock, horror - show ALL THREE on the same night beats me. It's not like they're overloaded with material...)