Continuity mistake: During the fight in the garage, the protagonist neutralizes (and maybe neuters) one of the baddies crotching him with the car door. In that sequence, his hands keep changing position on the door. (00:07:30)
Continuity mistake: Théo shows up in class unannounced. The teacher tells him to sit next to "that girl", mistaking Daniel for one. The classmates of course have a cackle at that; the girl at the desk behind Daniel's laughs holding a pen in her left hand at first, right hand at the cut. (00:08:50)
Visible crew/equipment: When Matthew is following Nina's cries for help through the woods you can see numerous set lights in between the trees (in the distance). (01:09:43)
Other mistake: The town is Mt Barker. The red and blue ribbons on the sheep pen say Mt Baker.
Continuity mistake: When Clarence and Daniela are in Killian's office, Clarence picks up a photograph on the desk. In the close-up shot of the photo, she is shown lifting it off the desk, but when it cuts to a wider shot, the photo is only lifted about an inch over the desk. (00:03:48)
Factual error: The timeline is completely wrong. The film begins in 1902, at which point Gertrude Bell has just left Oxford and is about to go to Persia. In fact, Bell was 34 in 1902 and went to Persia ten years earlier, in 1892. By 1902 she had already been travelling for a decade.
Continuity mistake: During the saloon heist, Luke Wilson comes in to distracts Harvey Keitel. Danny pulls out a roll of banknotes to buy "some real scotch from Scotchland"; one of the girls poured a drink to Smiley and put the bottle down, but the bottle in a following shot is in a different position. (00:50:50)
Factual error: A library assistant is showing his cellphone to a Fed. The Fed pulls out his gun and shoots the assistant from about 8 inches away into his left temple. Another Fed, standing to the immediate right of the assistant is shown after the shot. But there is no blood or material spray on him at all. His white shirt is immaculate. In fact, there is no blood anywhere.
Continuity mistake: Ilya is standing across from and about midway between Chris and Alicia. He spears the shovel into the ground, but it unintentionally falls over to his right (mostly off-screen). The next view of the shovel shows it has fallen to Ilya's left. (The entire shovel is to the right of Chris, which would be too far regardless of which direction the shovel's handle fell.) In the next view, the shovel's blade is opposite Chris' left foot and later the angle is different. (00:36:30)
Continuity mistake: The handful of yams (pureed) that Glory throws onto the left side of her bowl is spread out, relatively flat, and spans close to the bowl's rim. Suddenly, the yams are piled higher and further away from the bowl. The yams on both sides appear to vary, but other views are too short to be confirmed (without pausing). (00:48:11)
Continuity mistake: After Thomas biffs the trucks, the position of the way they are derailed changes between shots.