Trivia: ANBU members are the equivalent of the secret service. The company ANBU also produce the show along with Anime.
Trivia: Sam mentioned an old case from 1999. In the German dubbed version, it's from 1990 (even in the German subtitles it's 1999). Obviously the missing nine years takes to long to fit into the mouth movements. (00:11:10)
Trivia: Spooks does not have actor credits at the end. The Internet Movie Data Base even lists the lead actors as 'uncredited' for many seasons.