Modern Men - S8-E2
Visible crew/equipment: When Trigger tells everyone about his accident with a "mind your head" sign, as Boycie pays Rodney to get the drinks, a boom mic is visible at the top of the screen.
Modern Men - S8-E2
Revealing mistake: When Del and his mates are in the pub, when it's Del's turn for the drinks, he gives Mike a hairdryer (really an electric paint stripper). If you notice, Del picks up the hairdryer off the floor.
Modern Men - S8-E2
Continuity mistake: While Del and Rodney are arguing over the Trotter Crash Turban, the end of the scarf attached to the helmet keeps changing position. In one shot it is behind Rodney's back, then in front of his chest, and then behind his back again.
Chosen answer: An apparent long string of illnesses.