Deliberate "mistake": In the first few series, it is suggested Lister and Kochanski barely know each other. In 'Balance of Power' Holly says that Lister has only ever spoken 173 words to her. However, by series 4 Kochanski is referred to as Lister's ex-girlfriend with whom he shared a relationship. In the series 4 documentary, Doug Naylor explains that Lister's attitude towards Kochanski was imature in the first series which is why they changed his back story from wanting to be with Kochanski to actually having been with her by series 4.

Continuity: The time that the events involving the crew of Red Dwarf keeps changing throughout the series. At various times, references are made to the date, which is stated as being in the 21st, 22nd or 23rd centuries. Examples: In 'Stasis Leak', the date reference is stated as being 2077 (21st century). But in 'Ouroboros', the date is stated as being 26th November 2155 (22nd century). Also in 'DNA', Lister says he is an enlightened 23rd century guy.

Visible crew/equipment: In the first episode, 'The End' when Lister is telling his door to lock so he can get his cat out you can see the hand of a member of the crew pushing the door shut (look out the window).

Continuity: In George's memorial service, the extras are totally different in the shots from George's point of view to the shots from the back of the room. Look for the woman with brunette hair and orange overalls - she's there in the forward shots but missing in the reverses. The chairs, tables, props, costumes and character placements are all completely discontinuous.

Continuity: When Lister and Rimmer see Cat just after Holly explains how he evolved, Rimmer runs at Cat screaming before he passes through him and we hear a crash off screen to indicate Rimmer has just run in to something. He is a hologram and is not solid, so no sound should be heard. [The original version did not have this mistake. The sound effect was added for the now defunct Remastered series.]

Continuity: At the start of the 'Welcome Back George McIntyre' reception scene, Lister, Chen and Selby are throwing things at Rimmer, then Rimmer looks around. In the next shot, Lister and Chen are looking round to their left, Selby is stabbing between his fingers, Rimmer is now looking straight forwards and Petersen has appeared from nowhere.

Continuity: When Rimmer leaves for his exam, the table in the room only has an ashtray on it. Moments later, when Lister locks the door, a magazine, a can and a mug have appeared on the table.

Continuity: When Rimmer makes a palm print on the exam paper, the sheet moves from overlapping the second sheet to becoming separate on the desk. The pen also moves.

Continuity: When Lister says his cigarette is a chicken, he looks at Rimmer. In the next shot he is looking at the cigarette again.

Continuity: Half way through the episode, the captain's office becomes covered by a wall.

Continuity: When George McIntye finishes his speech, he is standing. When the camera cuts back, he is sitting down.

Continuity: When Lister asks for his door to lock, the position of his bedsheets changes between shot. If you look closely, the yellow line vanishes.

Revealing: When Lister passes his hand through Rimmer, you can see Lister's hand disappear when it is just above Rimmer's shoulder.

Continuity: After Rimmer makes his palm print on the exam paper, he stands up to salute. In the next shot, the hand print on the sheet has vanished and both pages are blank.

Continuity: When Petersen is trying to knock the coin from his head, the next shot shows Rimmer studying his arm. In the background, Petersen is seen with his right arm on the table, whereas in the wide shot it was behind his head.

Revealing: When Rimmer leans onto the table in the drive room, watch his tie. It should disappear with his arm but it remains visible.

Revealing: When Rimmer runs at the Cat and passes through him, the Cat fades as well.

Continuity: In the drive room when Lister says Rimmer is still a smeg head, one of his locks is over his right shoulder, then in the next shot, it has vanished.

Continuity: When Lister pours the milk for his cat, he looks at the cupboard where the cat is, yet in the next shot he is looking down at the floor.

Continuity: When Rimmer leaves for his exam, he picks up a case from the seat by the window. When Lister locks the door and goes over to the cupboard, the case is still on the seat.