Continuity: When Flash is writing Theft next to no.6 on the board, Blackmail has appeared next to no.5 - Flash couldn't have written it on the board previously because when we see the board (before Theft is written on it), there is a blank space next to no.5.
Other: There is one shot where the Goth girl, whilst dancing to avoid the security beams guarding the picture, puts her leg through a beam but nothing happens.
Continuity: In the scene where Colin Firth is tasting the vodka, he dips his index finger into the drink but he tastes with middle finger.
Continuity: When the girls are crawling back along the cable, there is a shot from just in front of Steven Fry which shows them behind him, when every other shot shows that the cable is over the audience.
Continuity: At the shooting range, the teacher with the machine gun shoots the heads off several of the "ducks". But when the girls with ducks on their heads come up, a second later, all three ducks are intact.
Revealing: When the girls are crawling along the wire, There is one shot where it looks projected.
Continuity: When Flash and the girls are going through the 7 Laws of Crime, kidnapping is written on the board next to the no.4. When it comes back to the scene a little later, Kidnapping is no longer on the board.