In Lister and Rimmer's quarters there is an inflatable banana in the present and past where in series 1 there is no banana.
When Lister, the Cat and Rimmer leave the lift, the attendant thanks them for traveling with Express lifts and apologizes for the delay. However she had just accidentally killed herself demonstrating how to use the cyanide capsules.
When Lister first steps into the past, there is a large digital clock showing the date: Wednesday 2 March 2077, when In fact 2 March 2077 will be a Tuesday.
In the past's version of Rimmer and Lister's quarters, the set decorators missed removing Rimmer's "Today is the first day of the rest of your death" poster, which shouldn't be there yet given that he has yet to die and become a hologram.
Fake Shemp (double) playing Kochanski under a very wide brimmed hat in the final scene.