Visible crew/equipment: In the the episode "In-console-able" from series 19, in the kitchen when Paul accidentally puts custard and hundreds of thousands on a dinner, he puts the lid on it and when the camera zooms in you can see a cameraman with a camera recording and Barry getting ready for his take.
Chucklevision (1987)
Episode list - season 18
Starring: Barry Chuckle, Brian Patton, Jimmy Patton, Paul Chuckle
More mistakes in Chucklevision
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".