Continuity: While the Doctor is patching the communicator into the android's head, he takes off the communicator's top, yet magically it is back on a few seconds later.
Continuity From time to time, the "frozen" robots on the command deck can be seen to wobble. The most noticeable is when SV7 is threatening Uvanov over the communicator.
Revealing Mistakes Near the beginning of the episode, the Doctor encounters SV7. SV7's eyes are blue in this scene – clearly someone forgot to add the glowing-red-eye CSO that SV7 has only seconds later.
Leela [ high-pitched ]: Will somebody let me out?
The Doctor: Ah, a mouse in the wainscotting. Well squeaked, mouse!
The Doctor: I don't suppose there's any weapons aboard this mine?
Toos: They aren't necessary.
The Doctor: They are now.
The Doctor: I see, you're one of those boring maniacs that's to gloat? You're going to tell me your plans for running the universe.
Dask: No, I'm just going to burn out your brain… very, very slowly.
The Doctor: Uvanov, you remind me very strongly of a lady called Marie Antoinette in a long-ago episode of human history called the French Revolution. She wouldn't listen either, and she ended up losing her head!
D84: Please do not throw hands at me.
The medical name for robophobia, according to the Doctor, is Grimwade's Syndrome - a joke at the expense of production manager Peter Grimwade.