- Completely Different Title: The French title is "La Révolte des intra-terrestres, deuxième partie" (Revolt of the Intraterrestrials, Part 2).
- Deleted Scene:
- Amy and Mo's discovery that the Silurians have kidnapped a menagerie of modern animals, including a dog owned years earlier by Tony Mack was cut for time.
- Dropped in editing was an extensive conversation about faith between Rory and Alaya, which would have foreshadowed Rory's fate at the end of the story.
- A deleted segment from the scene in which the Silurians are marching the Doctor and Nasreen to the court hall had the Doctor saying that the "last time I was executed it really put a blight on the day."
- Playing Their Own Twin: Neve McIntosh plays both Restac and Alaya.
Trivia / Doctor Who S31 E9 "Cold Blood"