Continuity mistake: Able's head bounces off the simulant and lands behind him, yet when Lister sends the gelf and simulant back to their ship, the head is next to him on the floor. (00:20:10)
Continuity mistake: When the simulant drinks his drink, he lifts the cup up to drink, yet in the next shot he lifts the cup up again, repeating the same action twice between shots. (00:13:50)
Visible crew/equipment: When Lister, the Cat and Kochanski arrive in the game and start walking towards the camera, a boom mic bobs briefly into the shot. (00:03:55)
Continuity mistake: When the simulant walks past Lister, the Cat and Kochanski who are hiding under the blanket, he walks to the far right of the shot and a piece of material is hanging from him as he stops. The shot changes to show the simulant walking through the doorway, yet when the camera cuts back to Lister, the Cat and Kochanski, the piece of material is still in the corner of the screen meaning the simulant is still stood there. (00:11:20)
Revealing mistake: When Kryten's head explodes, you can tell the head is a dummy. (00:08:05)
Continuity mistake: When Able takes his head off and throws it at the simulant, he throws it forwards towards where Lister is standing. The head manages instead, somehow, to hit the simulant standing next to the gelf on Able's left. (00:20:00)
Revealing mistake: When Lister kicks the simulant in the head, you can see he misses him by about a foot. (00:20:00)
Continuity mistake: When Able screws Kryten's head on, he is standing in front of him. In the next shot, Able is behind Kryten next to the table. (00:15:30)
Revealing mistake: When Able screws on Kryten's head he only turns it once, yet in Tikka To Ride, Lister screws his head on at least twice around. (00:15:30)
Continuity mistake: After the Cat says about mooning out of the windows when Starbug gets hit, Kochanski falls back on her chair with her arms outstretched. In the next shot she is holding onto the monitor again. (00:25:00)
Revealing mistake: When the simulant hits Able over the head with the steel bar, you can clearly see it bend. He hits him a second time a few moments later and it is straight again. (00:14:45)
Answer: It's Queen Victoria, someone any Englishman would recognize, and needed no introduction.