At the end, the enormous serial number on the helicopter changes repeatedly between shots, from G-ORMA to G-ICSG and back again.
When Alex is chasing the white van, he cycles through a car wash and comes out completely dry.
In the toy store, the employee Alex goes to see has a crooked name tag but in the next cut, it's straight.
When Mrs Jones is leading Alex to Mr Blunt's office for the first time, Mrs Jones has a three inch tear visible in the back seam of the upper right arm of her jacket showing her white shirt underneath. This has then disappeared in the next scene where Alex is talking to Mr Blunt.
In his room at Sayle's, Alex is seen taking his pyjamas out of his case but when his things are later searched they are back in his case.
The so called Potuguese Man-of-war in the tank at Sayle's headquarters looks nothing like an actual Man-of-war. Men-of-war float on top of the water by way of a polyp filled with gas. The Man-of-war in the movie looked like a giant jellyfish.
Rider is sent on his mission by MI6, which deals with foreign intelligence and special operations. A case in England would be assigned to MI5, which deals with internal British problems.
A helicopter flys low along a runway instead of just going straight up and flying away.
In the rock-climbing photo the pair are each seen with a rope coiled diagonally round themselves. Although this is a common image, it is actually wrong, as there is never any reason to coil a rope like this
Special forces in the British military, such as the SAS and SBS, are never referred to as such, and certainly not in writing.
In the scene where Alex is on the runway, before he breaks there is a birds eye view, for a few seconds you can see the skid marks that has been left from previous takes.
In the opening scene, when the camera is rolling past all the class mates, one girl in the back ground quickly looks at the camera, then looks back to the front of the class again (the girl with the blue undershirt and long hair).
At the airstrip, when Alex is sitting behind his vehicle - he's about to shoot the approaching helicopter - you can see a crew member in the reflection on the vehicle.
At the beginning when Alex Rider gets up to speak to the class, the microphone box is visible on his back, when they do the overhead view of the hall.
The scene where Alex is riding through London is a never ending geographical muddle. They are seen first riding along Rotten Row, then in the opposite direction across Hyde Park Corner, then in the blink of an eye they are at the Royal Exchange, some 3 miles east.
Alex kicks a grill off an air vent above some workers and no one seemingly hears it.
In Cornwall, scientists show Sayle a model of a back up system to go on top of a London office block. Two days later the actual system is in place and connected up.
When Alex gets his gadgets, he is told that a particular cartridge is a bug finder, but in his bedroom, he puts in the cartridge that is a communication device.
The Stormbreaker module states that Dinosaurs appeared 160 million years ago. Dinosaurs first appeared during the Triassic period, approximately 230 million years ago.
Upon first arriving at the SAS camp, Alex is told "there are no ranks" (amongst other things) but the soldier telling him this is wearing the rank slide of Corporal.
When on the gangways after Alex escapes from the lab, one of the security guards can be seen turning around and running away from Alex - not chasing him, like all the other guards.
Sayle says that the Portuguese Man o' War's scientific name is "Physalia physalia", but the correct name is "Physalia physalis".