Visible crew/equipment: In "Wrong Number" from series 5, Paul and Barry are hiding from the spies and are dressed in Hawaiian clothes. As they are walking slowly away with the spy behind them, Paul's glasses, which are on his forehead, reflect the boom mic up until they leave the shot.
Chucklevision (1987)
1 visible crew/equipment mistake in season 5 - chronological order
Starring: Barry Chuckle, Brian Patton, Jimmy Patton, Paul Chuckle
Dear Diary - S8-E14
Visible crew/equipment: In "Dear Diary" from Series 8, when Barry's plane inspector phones up telling Paul about the plane, the boom mic is reflected in his goggles which are on his forehead.
Magnetic Distraction: Part 1 - S15-E5
Trivia: In the episode "Magnetic Distractions Part 1", when Paul and Barry are in the shop with all the TVs, and Barry keeps accidentally changing the channels, one of the channels he changes to has footage of the boys playing football from the episode "Football Heroes".