Four tapes were stolen in August 2006 in Budapest, where the 13-part series was being edited, and the thieves were demanding £1 million ($1.9 million, 1.5 million euros) for their safe return. The production offered a £40,000 reward for the return of the tapes. The Hungarian police found the tapes the next month.
The opening eye from the beginning credits is Jonas Armstrong, but the colour was later digitally changed from brown to green.
Robin's birthday is October 14th.
Keith Allen lost one of his teeth while filming a fight sequence for the show. This was written into the script, with the Sheriff losing a tooth in the last episode of Series 1. He takes teeth from skulls and places them in the gap in his teeth as a recurring gag in the second series.
The titles for the episodes in Season 1 were all lines used in that episode.