Visible crew/equipment: At The End of the episode, when Kryten explains why the Cat would kill himself, a boom mic shadow can be seen moving across his face,. (00:24:55)
Visible crew/equipment: When Holly says she is broadcasting on a higher frequency, when the crew are about to commit suicide, a boom mic can be seen in the top left of the screen. (00:23:30)
Visible crew/equipment: Just after Lister says the despair squid will either kill them, eat them or hump them, a boom mic shadow can be seen moving on his face. (00:06:05)
Visible crew/equipment: At The End of the episode when Lister makes his speech, the first shot shows a close-up of his face, then it shows a wide shot. A boom mic is pulled out of shot at the top of the screen. (00:25:50)
Answer: It's Queen Victoria, someone any Englishman would recognize, and needed no introduction.