Revealing mistake: After the T-Rex eats the curry, it starts stamping about the cargo bay, yet there are no ripples in the very watery curry. (00:08:30)
Revealing mistake: When Rimmer and Lister are being forced out Captain Hollister's office due to the effects of the fight catching up with them, a rattling sound can be heard off-screen, indicating the use of a hidden trolley-like device pushing them into the wall. (00:21:55)
Answer: It's Queen Victoria, someone any Englishman would recognize, and needed no introduction.