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)
Revealing mistake: At the end of the episode when Del and Rodney get hit by the car, Del jolts forwards slightly before we hear the sound of the crash. (00:29:10)
The Second Time Around - S1-E4
Visible crew/equipment: After Del talks about Pauline's second husband kicking the bucket, a boom mic can be seen at the top of the screen. (00:06:00)
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: When Del tells Rodney he should tell the women what he sold that day, a boom mic is visible at the top of the screen. (00:29:05)
The Russians Are Coming - S1-E6
Visible crew/equipment: Just before Rodney calls Del a ruthless mercenary, a boom mic shadow can be seen on the far left of the screen. (00:13:40)
Big Brother - S1-E1
Continuity mistake: At the start of the episode when Del walks behind Grandad's chair, the way he is holding his jacket changes between shots. (00:01:15)
The Russians Are Coming - S1-E6
Visible crew/equipment: When Del says about Kenneth Moore in the shelter, a huge boom mic shadow can be seen moving on the wall behind him. (00:15:15)
The Russians Are Coming - S1-E6
Visible crew/equipment: In the shelter when Del says, 'Think what i could do with £1000' the shadow of a boom mic can be seen in the top right corner of the screen. (00:13:05)
Continuity mistake: When Rodney is talking about breaking up the partnership, his hands switch from being on his knees to the table between shots. (00:07:50)
A Slow Bus to Chingford - S1-E5
Visible crew/equipment: When Del asks Rodney if he is still looking for a job, in the next shot the shadow of a boom mic can be seen on the bottom left corner of the sofa. (00:04:10)
Continuity mistake: When Del put the money on Vimmel's table, the statue jumps from the table to Del's hand between shots. (00:23:30)
The Russians Are Coming - S1-E6
Visible crew/equipment: When Del says they should drop a bomb on all Russian cities, a boom mic shadow can be seen in the top right corner of the screen. (00:13:35)
The Second Time Around - S1-E4
Continuity mistake: At the start of the episode, Del hands the box of tissues to his customer, but in the next shot the box has jumped into the hands of the man standing next to her. (00:00:40)
Audio problem: When Del invites all his mates round to his flat after the reunion, they start to go through a number of photos. When Del shows them the photo of the school football team, Trigger says, "There's that Italian kid, good player, what was his name?" But if you look closely, Trigger's voice has been dubbed over. Instead, he says, "There's that Italian Prat."
Continuity mistake: When Del hangs his coat up on the peg in the hallway, the whole stage wall shakes when the coat falls off. (00:02:20)
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)
He Ain't Heavy, He's My Uncle - S7-E6
Visible crew/equipment: When Del is looking out the window at the end, you can see a camera reflected in the glass.
Revealing mistake: In the Trotter's flat at the start, in some shots, you can see the mirror has been bent so you can't see the camera's reflection.
Chosen answer: An apparent long string of illnesses.