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".

Revealing: When Tel Varon walks in front of the wall screen in the justice data center, a flash of gibberish lettering and a blue matte line both appear briefly above his head.

Revealing: When the prison ship launches, the cloud of smoke reveals the black wires that are lifting it up.

Revealing: Just after Avon slips into the access tunnel and the prisoners close the hatch behind him, the star field in the window shakes and wobbles.

Visible crew/equipment: That main console! The uppermost of the flight consoles of Liberator isn't fixed down in this episode, and wobbles almost every time it is touched, and not just small wobbles. Watch for the 10 seconds or so after Jenna says "Eventually I might just be able to get her to start and stop", and you'll wonder how she didn't knock the entire prop off whatever it's sitting on and onto the floor.

Continuity: Though no one touches him, the London crewman lying dead in the transfer tube changes positions between the time Blake and co. first board Liberator, and the time Raiker enters the tube and shoots at Blake.

Revealing: The boom shadow is visible moving swiftly across the actors' heads when Avon says, "You've got an army of five, Blake."

Revealing: Whenever the prison ship fires its engines, the smoke trails travel to the top of the screen, as smoke does in an atmosphere. In space however, it should billow away from the engines in a more or less straight line.

Continuity: At the end of "The Way Back," Blake, strapped in his prison ship seat, looks over his shoulder at the window behind him as the ship leaves Earth. This same scene is recapped at the beginning of "Spacefall," only now Blake is sitting one seat to the left of the window instead of directly in front of it.

Revealing: Aboard the London, as Raiker opens the rec-room door, a boom mike shadow moves across Avon's face.

Continuity: A large white cushion, knocked askew when Blake tosses Avon over the flight couch, has righted itself a few shots later, as Avon gets up from the deck.

Continuity: When Vargas beams up to the Liberator just ahead of Blake, Gan & Vila, he challenges them when they arrive from the other side of the room - by stepping out of the teleport bay. But they're standing in the teleport bay, and Liberator has only one. So exactly where is Vargas standing?

Continuity: At the end, Blake teleports Vargas, who's wearing a long purple robe, out into space. But the figure we see materializing in space isn't in a robe. It appears to be wearing a spacesuit instead.

Revealing: Stock footage of the London's launch from Earth is run in reverse when it lands, supposedly 8 months later, on Cygnus Alpha. What are the odds that a remote penal planet will have a launching pad with configurations, lights, buildings and background terrain all completely identical to the launch stage on Earth?

Revealing: The high priest Vargas is wearing a nice new pair of decidedly 20th century basketball shoes under his robe. We even get a good close-up of them at one point.

Continuity: During Blake's first encounter with Cally, the smudges on the front of his tunic (including a big chalky footprint left by her boot) disappear, reappear and rearrange themselves several times between shots.

Revealing: Jenna moves down the corridor on her way to the hold with her Liberator gun in hand. The weapon lights up and flashes several times, even though she isn't firing it.

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.

Continuity: The alien hiding in the hold throws a large blue tool at Jenna. It strikes her on the back of her right arm. But in the next shot, she's holding her left arm, and Gan later treats a bruise on her left arm, nowhere near the spot where the tool hit her.

Revealing: The double-bladed axe one of the Decimas uses to attack the station windows is wobbling as he strikes with it. Small wonder he's not getting far at breaking in, with a weapon made of rubber.