Factual error: The grenade booby trap in Hattie's flat gets triggered, with the pin coming out and lever comes off. Once that happens the fuse is set and there's no way to stop it exploding, but Shaw puts the pin back in and renders it inert again. (00:25:50)
Factual error: When the multiple vehicles are chained together and latched onto the helicopter, the chopper starts lifting up hard enough so that most of the vehicles are off the ground with the lead one only touching by the front wheels. The driver then hits NOS in the car to super charge the front wheels. We see them spin on the dirt road and pull the other cars down bringing the chopper down. However this defies almost every law of physics. With the cars lifted up and the weight taken off the front wheels of that vehicle, and it being on dirt with no spikes, there's no way it would have the traction to pull the chopper down at all. It would just peal out in the dirt. (01:45:40)
Factual error: In the helicopter scene, the main villain yells at the pilot to climb. He then goes up and throws the pilot out and takes over. It is a common misconception that helicopter pilots sit in the same seat as airline pilots (left seat). Helicopter pilots sit in the right seat. He just threw out someone that wasn't the pilot. (01:44:00)
Factual error: The lorry trailers Shaw drives under have no side bars fitted. This is a legal requirement in the UK and Europe to stop people doing exactly this, also they are fitted for safety reasons to stop people going under the trailer in an accident. (00:37:40)
Factual error: The grenade is kicked from its resting place and thus the firing pin is removed. 14 seconds later Shaw returns the pin to disarm the grenade, ignoring that mistake (which is already listed), a grenade's fuse is approximately 4 seconds. Much shorter than the 14 seconds shown on screen. (00:25:30)
Factual error: When Hattie is firing at Brixton she only fires 4 shots before weapon stops. She is using a Glock 26 which carries 10+1 rounds and the slides doesn't lock back yet she still pulls the trigger and you can hear the "click'. (00:02:35)
Factual error: When the Eteon bike is riding over the cars in the alley, the registration plates are completely the wrong format for the UK. Most cars use either the "A 123 BCD" or the "AB 12 CDE" format. Some personalized plates can be different such as "38 G." However none use the format shown in the film "D51M R9S" (00:36:20)