Continuity mistake: After explaining that he's laced the soup with pepper, the Doctor, when he says, "Anyone got the shivers?", turns his head from looking to his left so he's looking in front of him. In the following wide shot, his head is turned to his left again. (00:26:10)
Continuity mistake: When Donna suggests that she distract the next guard using her "womanly wiles", she flips her hair behind her shoulder. In the next shot, when the Doctor tells her to save her wiles for later, the hair has spontaneously moved to its former position. (00:19:35)skater49th
Continuity mistake: When the Doctor activates the teleport, Donna is onboard the Sontaran ship, holding a cell phone in her left hand. When she arrives in the basement of the ATMOS factory, she's holding the rubber mallet in her left hand, and her right hand is empty, with the phone nowhere to be seen. (00:32:40)
Continuity mistake: When Donna is sneaking around the Sontaran ship, she's carrying Martha's old phone, which she's using to stay in touch with the Doctor, and the rubber mallet from the TARDIS. There are times when one of the two objects, the phone more often, is missing from her hands with no explanation.
Continuity mistake: When Private Harris orders the two hypnotized workers in the basement of the ATMOS factory to let him through the door they're guarding, he's holding a torch in his left hand, and when shown from behind has that hand down by his side. In the Sontarans' video feed, which also shows him from behind, his left hand is on his assault rifle. (00:11:15)
Continuity mistake: When the Doctor gets embarrassed as Donna lightly mocks him for not realizing that when she said she wanted to go home, she only meant for a brief visit, he rubs his chin with his left hand. When Ross Jenkins interrupts by saying, "Ready when you are, sir," the Doctor is now rubbing his chin with his right hand. In the shot after that, it's back to his left hand. (00:20:40)
Continuity mistake: When the Doctor opens a shipping container full of Ood and he and Donna stand in the entryway, he only opens the right-hand door, leaving the other one shut. In a shot from behind the two of them, facing into the crate, the left-hand door is now wide open. (00:17:15)
Continuity mistake: When Ood Sigma steps in front of Mr. Halpen while he's holding the Doctor and Donna at gunpoint and suggests he have a drink, the glass Sigma holds up is empty, despite the fact that he was heard pouring Halpen's tonic into it just moments before. In a shot later in the scene, the glass is shown full. (00:37:30)