Visible crew/equipment: The "exterior" windows in Blakes 7 are a constant source of amusement. In many cases you can see the top or bottom of the board which is supposed to be the window, with empty set behind the board. Turn the brightness of your screen up to maximum and in many cases you can see that "windows" are semi-transparent perspex with light bulbs for the stars. You can often see wiring running from bulb to bulb, looped and cable-tied together, etc., through the "windows".
Time Squad - S1-E4
Visible crew/equipment: An electrical set cable, poorly concealed between the seat cushions, tangles around Jenna's foot as she's getting up from the teleport console, and causes her to trip. (00:37:00)
Visible crew/equipment: After Avon says, "I haven't been anywhere near them," and sits down on the flight couch, part of the camera dolly moves across the bottom of the screen. (00:06:30)
Visible crew/equipment: When Jenna tries to call Gan and Vila from her flight deck station, part of a piece of equipment is sticking out into the lighted corridor to her left. It's still there later, when Gan walks through the opening, but it's gone a short time later. (00:06:45 - 00:13:15)
Visible crew/equipment: Just after Avon says that the numbers on the clipboard mean absolutely nothing, the boom shadow moves across the top of the metal safe set into the wall behind him. (00:41:30)
Visible crew/equipment: When Vila asks Avon if he ever cared for anyone except himself, an equipment shadow scurries rapidly across the set behind him. (00:37:45)
Visible crew/equipment: When Blake and the landing party are on the flight deck, preparing to go down to the planet, something black intrudes on the left side of the screen during a shot of Avon on the flight couch. (00:08:50)
Visible crew/equipment: Ah, the hazards of shiny metal set walls. When the doctor closes Avalon's cell door, there's a hazy but discernible view of the camera and a moving film crew member. (00:30:30)
Visible crew/equipment: Avon is picking himself up from the computer room floor after a berserk Gan has attacked him. Blake rushes in to say, "Are you all right?" But he's been standing out there in the corridor, blocking a big bright patch of light throughout the scene, only to rush in on cue. (00:26:10)
Visible crew/equipment: When Jenna asks Gan to keep trying voice contact with the unidentified ship, the boom shadow is distinctly outlined on the control console to the left of the shot. (00:08:00)
Visible crew/equipment: When Sarkoff puts a record on his antique phonograph, the metal desk behind him reflects a camera dolly rolling by. (00:25:50)
Visible crew/equipment: Sarkoff holds his Plexiglas/Perspex butterfly case up to admire it, and captures a perfect image of one of the set's large rectangular light reflectors. (00:28:15)
Deliverance - S1-E12
Visible crew/equipment: When Avon says, "It could have been a power unit burnout," a boom shadow moves quickly across the bottom of the screen. (00:04:05)
Deliverance - S1-E12
Visible crew/equipment: During Zen's report on the planet conditions, an equipment shadow is visible on the flight couch at the lower right of the screen. (00:07:05)
Visible crew/equipment: When Avon calls and wakes Vila up, ordering him to the teleport room, you can see Vila, who's supposed to be in his quarters at this point, hiding in the corridor waiting for his cue. (00:40:50)
Visible crew/equipment: At the end, when Blake says "The other end is connected," the boom shadow crosses Avon's face. (00:46:50)
Visible crew/equipment: The boom shadow forms a distinct outline on the control console next to Vila when the crew are discussing Space City and the Terra Nostra. (00:04:40)
Visible crew/equipment: When the clone Blake is asking Coser for the weapon and holding his hand out, the boom mike is visible hanging over his head. (00:36:45)