Chapter 27 - S3-E1
Visible crew/equipment: A reflection of a cameraman is visible in Frank's watch as he reassures Doug that he has a place at the White House. (00:40:30)
Visible crew/equipment: After Charlie comes up with the idea of creating a false master key and designing the lock that it opens, when it cuts to them back at the office the yellow T-mark can be seen on the floor by David's foot.
The Made-to-Measure Murders - S13-E2
Visible crew/equipment: A crew member's shadow is seen moving behind an open door that a character is walking by. (00:15:45)
Visible crew/equipment: Sherlock and Joan are sitting on a street restaurant. The restaurant glass door opens in the background and you can see a light box reflected on it.
Sex, Drugs and Rockin' the Cradle - S3-E14
Visible crew/equipment: The tip of a boom mic is swinging in the upper left of the screen during a late scene between Amanda and Peter. (00:32:13)
Visible crew/equipment: When Dani hands the spider back to Miles after he uses it to scare Flora, just after she says "Including me" and the spider moves from Dani's hand to Miles' hand, a red tape marker can be seen on the ground right under Victoria Pedretti's left foot. (00:34:09)
Santa Claus - S1-E12
Visible crew/equipment: When Mark Harris shows Matlock into his office, the actors' T-marks can be seen on the floor under the chair.
Visible crew/equipment: As Louie is being beaten up by the blonde lady, the shadow of the hand-held camera filming the scene is seen.
Visible crew/equipment: As the steam train is pulling away in reverse with Peel and Albert on board, a bald crew member can be seen crouching in one of the carriages.
Visible crew/equipment: When Antonio is talking to his CI, you can see the green and red place marking tape on the ground.
The Placer - S1-E7
Visible crew/equipment: Camera lights are reflected in the side of the villain's jag arrives when it arrives at the warehouse.
The Color of Truth - August 8, 1955 - S1-E7
Visible crew/equipment: The shadow of the camera is visible on the car's hood when Al is trying to convince Mrs. Melanie not to go after Sam. It lingers there for a while in the shot.
Visible crew/equipment: When the Lone Gunmen return to their van after meeting Jimmy, when Langly opens the driver's side door, you can see the reflection of two crewmembers' feet in the rear view mirror. (00:24:20)
Visible crew/equipment: When Brody and Carrie exit the bar and open the car door, a big lighting equipment screen is reflected on the door.
Visible crew/equipment: After Doctor Ellingham finds the sofa on the road, Bert shows up and sits down on it and talks. As he does, watch the side mirror when Doctor Ellingham returns to his car. When the door opens, you see the reflection of a cameraman or other crew member reflected in the mirror. (00:02:05)
Reformation - S3-E10
Visible crew/equipment: During the opening sequence when two hoodlums are walking out of the convenience store, a lighting rig and crew can be seen on the right-most part of the frame. (00:02:15)
Visible crew/equipment: During the prison escape, as Phelps and Cole are stealing the car, a microphone can be seen above them, hanging more than a foot into the shot. (00:18:20)
Visible crew/equipment: When Joel and Ellie cross the bridge, you can see crew on the left, in the overhead long shot. This show is an HBO Original, and the mistake has been edited out in the current streaming version. (00:14:35)
Visible crew/equipment: When Arthur goes to Dragoon to ask for help, when Dragoon runs out of the hut to turn back into Merlin, on the left hand side of the screen you can see a camera crew in modern clothes. [Fixed in Netflix version]. (00:23:00)
Suggested correction: I don't see any crew. I'm watching it on Netflix. Perhaps they fixed or perhaps they edited it out after realizing the mistake. But they aren't there anymore.
Even if Netflix corrected the mistake doesn't mean the mistake is now invalid if the mistake existed in the original BBC One airing. Netflix is known to change or edit programs they stream (such as replacing soundtrack songs).
Visible crew/equipment: Season 3, "Birthday Cake": When Littlejohn goes into the river, you can see the reflection of the entire camera crew.