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.
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: 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.
Visible crew/equipment: At the start when Del is talking to Trigger, a light screen is reflected in Del's glasses. (00:02:00)
Visible crew/equipment: When Del picks up the hat off the car, he starts to walk to the grave. When he does, the camera crew and equipment are reflected in the car's paint. (00:02:55)
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 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.
Visible crew/equipment: At the start when Arthur says to quieten down, there is a reflection of movement in the butter dish between Del and Rodney, that can only be the crew. (00:01:25)
Visible crew/equipment: When Rodney says the scientific name for the butterfly, a boom shadow moves over Del's arm. (00:04:40)
Visible crew/equipment: When Del and Rodney run to the balcony, a boom mic is reflected in the window following them. (00:15:15)
Visible crew/equipment: Wires are visible on the butterfly that Del and Rodney try to catch.
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: Just before Del gives Rodney his cup of half full tea, when they are in the middle of the sea, a boom mic is visible at the top of the screen.
Chosen answer: An apparent long string of illnesses.