On its original airing, the series featured seven episodes. The original 2-disc DVD set comprises these original episodes. The show has subsequently been re-edited into a 10-episode series. Notably, the preparation for the trip has been extended over two episodes. There is also additional footage during the trip itself. There is also an entirely new tenth episode, a retrospective of their journey. This extended series has been broadcast on Sky television in the UK, and is also available on a new 3-disc DVD set.