Other mistake: In the chase scene, where Johnny and Bough are chasing the hearse, when Bough and Johnny are discussing where the hearse went, Johnny says "They were heading south." Then he turns the steering wheel to his right, yet when it shows a view of the truck it turns to it's left. (00:22:15)
Other mistake: When Bough tells Johnny to wait for his signal that he's disabled the alarm system whilst discussing their plan in the aeroplane, Bough says, "You then break into this window here." On the subtitles, it actually reads "You them break into this window here."
Other mistake: When Johnny takes his Bloody Mary from Sauvage at the Reception in the Tower of London, he asks him, "Could you rustle up some of those cheesy niblets?" On the subtitles, it reads "Could your rustle up."