Continuity mistake: When Del is at Vimmal's house, he drops his biscuit in his tea, yet when he takes it out again it is dry. (00:13:00)
Continuity mistake: Just before Del says that Rodney needs Radar, the door behind Rodney is beginning to swing open. Nobody makes any move to close it. The next time we see that door, it is firmly shut. (00:04:50)
Continuity mistake: When the policeman stops the car, when you see him through the front window of the van, he has a torch in his left hand. When he moves towards the van he hasn't.
Chain Gang - S6-E3
Plot hole: When all the gang including Arnie leave the flat to go to the restaurant to meet Mr Stavros, Rodney decides to stay at the flat and wait for Cassandra to phone him. The next scene shows the gang all watching Arnie in the restaurant waiting for Mr Stavros to arrive. Rodney is sat in the van with Uncle Albert but Rodney decided to stay at the flat so there was no way of him being there.
Hole in One - S4-E3
Revealing mistake: Uncle Albert is seen putting the post back through the letter box. If you watch the scene carefully, the letters appear to pull themselves through, no doubt with a helping hand from the crew.
The Russians Are Coming - S1-E6
Visible crew/equipment: When Grandad shouts at Del in the bunker about war, a boom mic shadow can be seen moving on the pillow behind him. (00:15:30)
Continuity mistake: When Lennox Gilbey opens a can of beer in the supermarket, you can see that he has a long packet of spaghetti inside his jacket. He doesn't take it off the shelf until a few shots later. (00:06:00)
Big Brother - S1-E1
Continuity mistake: At the start of the episode when Rodney and Grandad are arguing, Del walks past Grandad and past the chair next to him, yet in the next shot he walks past the chair again. (00:01:15)
Visible crew/equipment: Wires are visible on the butterfly that Del and Rodney try to catch.
The Russians Are Coming - S1-E6
Visible crew/equipment: When Grandad complains his TV doesn't have a picture, a boom mic can be seen in the top left of the screen. (00:12:10)
Continuity mistake: When Rodney and Del are driving down the road and Rodney is talking, you see a side shot of the van and you will notice his lips aren't moving.
Visible crew/equipment: In the very first scene, as Rodney is reading the book, a crew members' finger can be seen brushing past the screen in the bottom left of the picture. (00:01:00)
Visible crew/equipment: Just after Rodney psychs himself up in the club, the reflection of a boom mic can be seen moving in the picture on the wall behind them. (00:24:40)
The Jolly Boys' Outing - S6-E7
Continuity mistake: When Del says to Rodney "Rodney, give me that ball!", while Rodney and his mates are playing football, Boycie is walking behind them. The next shot is Rodney and behind him is Boycie in the coach as if he has been sitting there all along.
Continuity mistake: Near the beginning of the episode, when Del talks about his Polaroid, there are no extras walking behind him. The shot changes quickly to Rodney, then to a wide shot of both Rodney and Del in which time the 2 extras walking in front of Vimmal have manages to walk down the stairs behind them. (00:02:30)
Video Nasty - S5-E5
Visible crew/equipment: After Rodney complains that the "t" and "a" are missing from his typewriter, Del says "I have faith in you". As he says this, a boom mic sweeps past the top of his head.
Audio problem: At the beginning of the episode, the pianist and drummer are not playing in line with the sound track.
Continuity mistake: At the start of the episode when Del drinks his tea, he picks up the cup with the spoon still in it. When he puts it down the spoon has gone. (00:02:20)
Hole in One - S4-E3
Continuity mistake: At the begining of the episode, there is a box that is by the table Rodney is sitting on. A little later, Albert and Del come and open that box. The box disappears and then reappears between shots. (00:02:05)
If They Could See Us Now...! - S9-E1
Visible crew/equipment: When Cassandra is explaining why the fancy dress party is early, as she walks off, a boom mic comes into shot and is easily visible above Rodney's head.
Chosen answer: An apparent long string of illnesses.