Continuity mistake: In the beginning when the tank is seen coming it breaks down the same gate twice. (00:01:25)
Continuity mistake: When Reed's cart stops in front of the Kenyan club there's no other cart around, but when the camera angle changes there's another one passing by. There's also a huge basket on the side of the road which hasn't been there before. (00:05:20)
Continuity mistake: When Quatermain hits the man to the ground before breaking a bottle on his head, you can see a shotgun on the floor next to the man. When it cuts, the shotgun is gone. (00:10:00)
Continuity mistake: When the man Quatermain wounded with his shotgun swallows the poison pill, you can see a lot of people close behind the man. When it cuts, everyone has moved a few feet away from the man. (00:11:25)
Continuity mistake: When the fourth attacker is brought before Quatermain he poisons himself. He falls on his back with his right arm stretched out behind him, but when the camera angle changes the arm is lying sideways. (00:11:30)
Continuity mistake: When the building explodes in the beginning, the man sent to recruit Quatermain walks close to him. When it cuts the man is a few feet away from Quatermain. (00:11:45)
Continuity mistake: When Reed and Quatermain arrive in London to meet M and the carriage stops the road is empty. However, when the camera angle changes another carriage is passing by. (00:13:00)
Continuity mistake: When Quatermain arrives in London, he is greeted by Reed who leads him down some stairs. In the shot where they're going down some spiral stairs, for some reason you see a different actor (who is clean shaven) posing as Reed, going down the stairs holding the umbrella in his right hand. Then in the next shot you see the "original" actor who has a slight goatee and is holding the umbrella in his left hand. (00:13:25)
Continuity mistake: In the scene where Quatermain first meets M, they're in a library with a long table in the middle. When Quatermain sits down in the chair, a folder magically appears which wasn't there before in the other shots. (00:14:15 - 00:15:15)
Continuity mistake: The invisible man is seen in one shot with cream covering the majority of the front of his face but it ends towards the middle of his head. When he is in the automobile, the cream is now completely covering his head and neck. Then, when they go to see Dorian Gray, only his face is covered with make-up again. (00:17:50 - 00:22:35)
Continuity mistake: How can the invisible man cover his face with white cream so we can see him, but his stubble is visible throughout the movie as dark brown only when he has the cream on his face? It can't be because cream's on it, because then it would be white. (00:19:55)
Suggested correction: This is likely a lighting issue as the actor is famously red haired.
Continuity mistake: When The Phantom tells Quatermain to drop his gun, Quatermain drops it. It cuts and we see the gun landing with the handle pointing out. The way Quatermain dropped the gun the handle should be pointing in. The gun could not have changed angle that quickly when watched how it is dropped. (00:24:00)
Continuity mistake: When the League are at Gray's home and the Phantom interrupts, he tells Quatermain to put the gun down. The gun starts falling pointed to the right but a close up shows it landing pointed to the left, but it never flipped. (00:24:00)
Continuity mistake: When The Phantom kicks Quatermain's gun along the floor we see the gun landing close to the wall. In fact the tip of the gun even sticks a bit in to a hole in the wall. When Quatermain a few seconds later picks the gun up the gun has moved at least a feet away from the wall. (00:24:40)
Continuity mistake: When Dorian is getting shot, the shooter's mask thing falls down. About two shots later it is back up, in the next shot it is down again. (00:26:45)
Continuity mistake: When the assassin takes Mina as hostage and holds a knife to her throat, Mina's scarf is under his arm. Two shots later the scarf is hanging over his hand. (00:27:50)
Continuity mistake: When Dorian Gray is shot with the machine gun, all the bullets are taken right in the gut, and the wounds are correctly shown in mirror-image when the back view of him is shown. However, the next shot of his front shows a couple of wounds in the shoulder, the biggest one being in his right shoulder at the very top, a wound which was not visible in the back view. (00:27:55)
Continuity mistake: When Mina bites the attacker at Dorian Gray's house for the first time there's blood all over her face, but after she bites him the second time it's gone before she had a chance to wipe it off (even that wouldn't have removed the blood so completely). (00:28:25)
Suggested correction: We don't see what she does when she's down though. Whilst you are correct you could be forgiven for believing that she may give word her face on his clothing.
Continuity mistake: When the members of the League are attacked at Dorian's home, the fight is accompanied throughout by a blizzard of paper falling from a height, yet hardly any of the books have been disturbed on their shelves. (00:28:40)
Continuity mistake: Mina's hair turns curly whenever she is in vampire mode EXCEPT when she is in Dorian's library and attacking the goon who held a knife to her throat. (00:29:20)
Suggested correction: Because she doesn't go "Vampire mode." She simply sucks his blood.
She's can't suck his blood without turning into a vampire. Her "vampire mode" includes having fangs used for sucking blood.
She is able to control her transformation. She's progeny of Dracula himself. She's extremely powerful.