Continuity mistake: Rodney says that he picked up the money off the table when they were trying to escape from the police, yet if you look closely he never goes near it. And he never has another chance to pick it up.
Visible crew/equipment: When everyone's back at the flat, as Del Boy is looking straight down the hallway to his and Rodney's bedroom, someone comes up to him and he turns around. When it goes from his close-up to the wide shot of everyone else the shadow of the camera reversing backwards is visible for a few seconds.
Continuity mistake: When Sid is preparing Slater's food, keep an eye on Sid's cigarette. In one shot, it is normal length, but in the next, it is virtually gone.
Revealing mistake: When Denzil thinks he's going mad seeing Del cross the road, look at the zebra crossing Del is walking on. It's just a bit of carpet rolled down on the ground. (00:49:48)
Hole in One - S4-E3
Continuity mistake: When Rodney says "yeah he did. The landlord.", in reply to Solly, he has a glass up to his mouth. In the next shot, he has obviously just swallowed what was in there, the glass is back on the table and you can see his cheekbones moving.
Visible crew/equipment: Wires are visible on the butterfly that Del and Rodney try to catch.
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.
Hole in One - S4-E3
Revealing mistake: When the post is being posted through the door, you can see the letters appear in the letterbox and then wait a few seconds for Albert to hang his coat up before being pushed through. (00:01:00)
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.
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)
Visible crew/equipment: When Rodney and Del are back in their own flat, Del is pouring a drink, the shadow of a boom mic can be seen on Rodney's shoulder right up until Rodney walks away.
Plot hole: Rodney follows Denzil all the way to Hull. However, it's established that Rodney is a fair distance behind Denzil several miles at least. How is it that Rodney knows exactly where Denzil has gone? He doesn't know Denzil's destination as he says to Del "he must have a load to pick up".
Visible crew/equipment: When Rodney and Del are talking in the pub a boom mic is reflected in the picture above Rodney. (00:24:30)
Visible crew/equipment: When Del goes back to the bar after realising that Debbie is his, in the top left of the screen, a shadow of a boom mic can be seen moving away near the "Carlsberg" sign.
Visible crew/equipment: Near the start, as Denzil drives away after seeing Del in a traffic jam, as you see the three-wheeled van, a boom mic can be seen reflected in the windscreen.
Visible crew/equipment: When Del and Rodney are in Debbie's flat, Del and Rodney are talking about June not having a record player. A shadow of either a camera or a crew member are visible on the open front door.
Continuity mistake: When Rodney gets the bag with the food in it, as he is about to get in the car, you can see behind him that he has left it on the driveway.
Continuity mistake: When all the gang are in the office near the end of the episode, Rodney goes from being by the side of Del, to being right behind him between shots.
Revealing mistake: When Del sees Denzil skating along and tells him that he's got his money (the butterfly), Denzil gives him a high five and crushes the butterfly. If you look at Del's hand when Denzil goes past him, you can see the butterfly is not crushed at all.
Watching the Girls Go By - S4-E6
Revealing mistake: At the start, Mickey Pearce is playing darts in the pub by Boycie. On the 3rd dart, he actually aims for the floor behind Boycie to make it seem like the dart bounced off the board. (00:01:10)
Chosen answer: An apparent long string of illnesses.