Corrected entry: In the beginning of the movie, after "Worst Pies in London", Mrs. Lovett leads Sweeney into her living room, and on the way, they pass stairs and a door that apparently leads up to his old barbershop upstairs. Yet when they go upstairs, and all through the movie, the only door that's up there is the one that comes from the main outdoor stairs.
Corrected entry: Just as Sweeney finishes singing "My Friends", while kneeling and staring at his own reflection in one of his old straight razors, Mrs. Lovett bends down with her face just above and behind his left shoulder. But as he slowly rotates the blade to reveal the reflection of Mrs. Lovett's face, her reflection appears to the right of his (as he sees it on the blade's surface). This could only be the case if her face were over his right shoulder, not his left.
Corrected entry: In the final scene, after Toby has slit Sweeney's throat just before the camera angle changes to show the last 5 or 10 seconds before it fades to black you see Sweeney holding Lucy, behind them is Turpin's corpse as well. He is noticeably right behind them in that shot. However when the angle changes for the final shot Sweeney and Lucy appear to be entirely alone in the room. This is directly contrary to the previous shot because Turpin was right behind them and would logically be seen in the next shot.
Corrected entry: In the scene where Todd kills Pirelli, aka Davey Collins, Todd smacks him over the head and puts him in a box. When Todd opens the box and cuts his throat, you can easily see that it is a dummy of Sacha.
Corrected entry: In the scene right before Sweeney and Turpin sing 'Pretty Women', Sweeney has the line "and who may it be said is your intended sir?" If you look closely, you can see Turpin mouth the line as Sweeney says it.
Corrected entry: After Pirelli loses to Sweeney and speaks to him privately, he starts kicking and cursing in Italian at Toby. After Toby is in the tent, Pirelli glances back to the crowd. You can still hear Italian cursing when his head is turned and his lips aren't moving.
Corrected entry: During the shaving contest, when Todd moves away from the man after having shaved him, his knife is completely clean and shiny, same as when he started.
Corrected entry: In the scene where Todd has just killed Pirelli he has blood on his shirt, so he puts a jacket on because Turpin is coming. When he takes this jacket off when Turpin leaves, there is no blood on the shirt.
Corrected entry: When Todd is killing his victims, blood is on the windows. On a busy street surely someone would see it and be suspicious.
Corrected entry: Sweeny Todd, circa 1800, is walking on a Victorian pleasure pier - the first of which type (iron structure with wooden decking) opened in Margate in 1855.
Corrected entry: Sweeny Todd, circa 1800,has an opening scene sailing up the Thames River, and we see Tower Bridge, built 1894.
Corrected entry: Near the end, when Sweeney kills the beggar woman, he steps on the lever for the hole in the floor to open for her to fall through, but the chair does not fold back like it does after he kills his other victims.
Corrected entry: During the song 'Epiphany', when Todd sings "the lives of the wicked should be made brief" and pulls Lovett down into the chair, Sweeney's hand is not even touching her, so she falls down by herself, trying to make it look like she was pulled down.
Corrected entry: When Sweeney Todd attacks Pirelli with the teakettle, it had just been whistling, meaning that the water inside was boiling. However, on his second stroke, Todd uses both hands, and from the angle, one of them must be directly holding the kettle itself. Additionally, when he drops the kettle and it spills water on the floor, the water should still have been hot enough to steam in the relatively low temperature of the room.