- Sean Pertwee (who has only two and a half minutes of actual screen time) also starred in the movie Dog Soldiers, which also was about werewolves. Sean Pertwee when in Dog Soldiers, had his guts ripped out by a werewolf. He was also in Doomsday where his character was strung up and fed to marauders, guts first. In this movie, a werewolf rips his guts out.
- Sean Pertwee and Rosie Day starred together in The Seasoning House also directed by Paul Hyett who also worked on The Descent with Shauna Macdonald.
- Rosie Day did her own stunts.
- The werewolves in this film had more of a human appearance rather than that of a wolf.
- The werewolves were played by people in prosthetic suits with the exception of the legs, which were done as CGI in post-production.
- Ed Speleers starred in another werewolf film, Love Bite (2012), as in this film he ends up being turned into a werewolf.
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