When Eggsy is in the police station and says he wants to exercise his right to a phone call, in the wide two shot there is no phone on the table, however when it cuts to the medium wide shot of Eggsy he picks up a phone which was supposedly there the entire time.
When Harry fights Eggsy's stepfather's gang in the bar, the amount of beer in his glass changes without him touching it.
In the opening scene "Falcon" is shot in the kneecaps. After the grenade goes off the camera pulls in for a close up and there are no wounds on the knees.
When Eggsy is running from security in Valentine's base, he is holding a gun in one of the initial shots despite being unarmed when entering. He does not actually obtain a handgun until he disarms a guard later on.
When Valentine is talking to the Princess through the opening in her cell door, his position is different between the shots from his side of the door and the reverse shot from inside the cell.
When showing Eggsy the Kingsman gadgets, Galahad tells him that oxfords have open lacing. This is incorrect, as they have closed lacing. It is actually derbies which have open lacing. He further makes an error in classifying brogues as being different from oxfords. They are merely any shoe that have decorative punching regardless of the lacing method. Furthermore, both pairs of shoes shown have oxford lacing.
Satellites traveling in low-earth orbit are moving at around 8 km per second (28,000 km/h) so there is no way Roxy could have destroyed one with a missile from a high-altitude balloon. Instead, she appeared to be targeting a geostationary satellite, however these are 35,000kms away from the Earth (about 1/10th of the way to the moon) and unable to be reached with a balloon.
The missile only needs the delta-V to travel from 36 km to 35,000 km requiring a missile with less than 34.3 MJ Joules of energy = 7.43 kg of TNT (very reasonable). Assuming: A 100 kg missile, and not using the rocket equation and ejected mass changes in missile weight.
The missile only needs the delta-V to travel from 36 km to 35,000 km requiring a missile with less than 34.3 MJ Joules of energy = 7.43 kg of TNT (very reasonable). Assuming: A 100 kg missile, and not using the rocket equation and ejected mass changes in missile weight.
While ascending with the helium balloons, Lancelot (Roxy) uses a motorcycle helmet as her "space" helmet, which has clearly visible vent holes making the oxygen tube mostly useless, but more importantly it means the suit could not be pressurized: the low pressure would have killed her.
When Merlin opens the parachute of Eggsy, the canopy should just fall packed on the ground without being opened. A very very strong wind could open it after the release, on the ground. But it's almost impossible to see that in standard conditions.
When Harry Hart and Eggsy going through the tunnel from tailor to the HQ, Harry should be the one who lean forward due to inertia forces from deceleration, not Eggsy.
Many people think Gazelle has a security implant (visible by the scar behind her ear) and that her head should explode like the other conspirators' heads do when "Merlin" activates the security system. However this is because when the implant is first observed by the Kingsmen (during the video of Valentine SIM cards announcement), viewers mistake the character the scar is shown on for Gazelle. But it's not her, it's a nameless Valentine assistant (played by Johanna Taylor) that in that particular scene looks a bit like Gazelle. Gazelle does not have an implant.
When Galahad locks the door in the pub he closes two bolts and turns the lock. He fights the men and then drinks his Guinness. It seems he then walks out the front door without unlocking or moving the bolts. But actually, as Galahad walks towards the door, the camera cuts back to Eggsy watching him leave. Galahad can be heard unbolting the door off-screen during that shot.
When Eggsy is ordered to shoot his dog he aims the gun at his dog, then aims his weapon at Arthur. However neither JB (the dog, Jack Bauer) nor Arthur were in any danger because Eggsy had his finger behind the trigger in the trigger guard. Thus making it impossible to actually pull the trigger.
The specific gun Arthur gave Eggsy has two triggers, one for the pistol, and the other trigger for the underslung shotgun. His finger was in the correct place to fire the gun.
The specific gun Arthur gave Eggsy has two triggers, one for the pistol, and the other trigger for the underslung shotgun. His finger was in the correct place to fire the gun.
The glass in the dormitory is thick enough to hold back the pressure of thousands of gallons of water. Breaking it with a human fist would be physically impossible, let alone breaking it after only five strikes. However, the room is designed as a test with solutions, one of which is breaking that glass. Hence the glass is not designed to safely hold the water, it's designed to barely be able to hold it and be breakable by the recruits.
If Valentine vomits at the sight of blood (he says even a drop), then he should have been vomiting when talking to Galahad / Harry Hart outside the church after the massacre, as he had blood on his face and both hands. However, Valentine exaggerates his condition for dramatic effect.
During Harry's fight in the bar, the goon with the gun somehow manages to fire EIGHT shots from a six-shot revolver.
During the skydiving scene when Roxy finally jumps out of the plane another skydiver is visible behind her, as she was the last one out all the others would be far below her.
When "popping Eggsy's cherry" at the tailor, the release for the secret passage is to pull down on a hook... in a room where random people routinely hangs clothes from those hooks.
A 7.62x25mm handgun is used during Eggsy's test to shoot the dog but it is revealed later to have contained a blank implying no harm would have come to the dog. The concussion from even a blank 7.62x25mm cartridge at close range can cause serious injury or death.
When pointing out, that the agent killed by her did not belong to any of the major secret services, Gazelle refers to the KGB.
However, the KGB was dissolved in 1991, way before the plot of the movie takes place.
When Harry is dropped off at Valentine's gala, the car has an audible internal combustion engine noise as it drives away. The car is a Tesla Model S, an electric vehicle.
Helicopters registered in England start with G in their serial number but the one shown has an American (N) serial number on the tail.
When Galahad is dropped off outside the shop, the 'taxi' travels North up Savile Row which is one way Southbound.
Being ostensibly British, the business jet that Eggsy, Lancelot (Roxy) and Merlin fly in, its tail number should start with a G. Instead, it starts with an N, indicating it's an American aircraft.
After Harry's fight with Dean's thugs in the Black Prince, the barkeep picks up the phone, presumably to dial the police. What can be heard is him dialing "9-1-1" instead of the "9-9-9" that is used in the UK.
The landscape at the V-Day "Fly To" coordinates of 66 58 30.0N / 61 43 04.8E does not match the movie. The coordinates are in a rather flat part of Russia, not mountainous terrain shown when they fly into the bunker. In fact, the elevation at those coordinates is around 330ft.
After the opening scene, Galahad does not age after the passage of 17 years.
The number on the rear of the medal obviously represents the date that Eggsy's dad died - 19th December 1997. As Kingsman is a British organisation, it would be written 19.12.97, not 12.19.97.
When the news is covering the free Valentine SIM cards, the headline misspells worldwide as wordlwide - "LONG LINES DAY AND NIGHT AS FREE SIM CARDS ARE DISTRIBUTED WORDLWIDE"
When Merlin takes Eggsy to the back of the plane to get a weapon, Merlin carries his rifle on his hip pointed up with his finger on the trigger. No one trained in firearms would ever have his finger on the trigger unless he was planning to fire. He would carry it with his finger on the outside of the trigger guard.
Given that the Kingsmen always refer to each other by their spy names when on official spy business, it seems a bit strange that Roxy's spacesuit has 'Roxy' on it rather than 'Lancelot'.
When Merlin is briefing Galahad and Arthur in the dining room the screen states that Professor Arnold has brown eyes when he in fact has blue eyes.