The Bentley clearly strikes the blast doors as it exits the bunker, yet its wing mirrors are undamaged in later shots.
In several scenes after the Bentley crashes through the bus there is no front end damage to the car.
At the point where Eden and the rest drive away with the car through the emergency door, you can see clearly that the car scrapes against both sides of the emergency door as it is closing. However in the next shot, the car has no damage whatsoever.
When the infected guy places the severed hand against the hand scanner, the fingers are curled. When he pulls the hand away the scanner shows a digital image as if the hand were pressed flat against it.
When they are searching inside the hospital at the beginning and they are attacked by the punks, 2 of the ones that run through the door are killed several times. The same shot/scene is repeated several times with minor changes.
When the team first gets attacked in the APCs a man is able to shatter the windscreen with nothing more than an axe. This would be impossible because a typical APC has bullet resistant glass 3 inches thick.
Even in the height of summer, Scottish weather is not warm enough for everyone to dress that scantily 24-7.
When Sinclair arrives at the wall the Sergeant that greets her says after asking why they call it "No Man's Land" that "there hasn't been a living soul south of that wall." Scotland is actually north of England not south.
If food is so rare that survivors are eating human flesh, why did the infiltration team encounter cows wandering on the road? Much of Scotland is very rural highlands that would be difficult terrain for anyone on foot. During the initial breakdown in order, it is highly unlikely that the survivors would scour the whole of the country for every last single cow before resorting to cannibalism. Only a few cows would need to survive to account for the herd that is then encountered, 30 years later and numerous (cow) generations later. (However, it *is* somewhat unlikely that none of the characters felt the existence of a large herd of apparently healthy cows to be worth commenting on.)
In the top secret satellite photos we see only few lonely people but when the crew arrives at the city they encounter hordes and hordes of "punks". However, the satellite photos are said to be from 3 years previous, the gangs may not have been as prominent as they are at the time period in the film.
While a well-maintained lift would not fall even with the cables cut, due to the use of the Otis elevator brake after 20 years of disuse and poor maintenance, it is quite possible the brake is inoperative.
They are told there is a no-fly zone over Scotland, hence the team having to take their tanks through the gate at the border. At the end of the film, not only does the Prime Minister of England arrive by helicopter, so does Bob Hoskins in a separate helicopter, even though the PM has ordered him to stay in London.
Apparently the Bentley was stored for over 30 years. It is extremely unlikely it would run after this much time. Petrol is good for about six months (volatile compounds destabilize), the battery would be dead, and the tires would likely become harder/brittle.
The highways (motorways) are too clean. After this much time has passed, vegetation would have covered the pavement.
In the opening scene at the England/Scotland border it is 9.17pm on June 20th but it is pitch dark. This is almost midsummer and it would be broad daylight at this time.
After Sinclair and co are captured, Sinclair had the remnants of a can of beer poured over her head. The can would appear to be pristine and new. Given that it's thirty years since any cans were manufactured, how is this even remotely possible? Aside from this, there are numerous other examples throughout the film of materials that cannot possibly have been manufactured to a high quality since the virus swept the country and are in a condition that does not fit with either being low quality and non-machined or with having suffered three decades of wear and tear. (The paper plates handed out during the "Medium Rare" scene are another prime example.)
The Bentley has ABS brakes which would make the screeching tires impossible.
When Sol is driving with his dead girlfriend in his passenger seat, in one close up shot, the actress blinks.
The armoured vehicles have radar scopes within them, even though they have no radar.
In the scene where Canaris' helicopter lands on the road you can see from the tail number ZS-HTN that the machine is South African. While who knows what manufacturer the British would be using in 2035 and given the civil breakdown, it would be unlikely to have a South African registration number.
During the fight scenes in the arena, the drum beat sound does not match the drum beat and the crowd sounds do not match the crowd.
When Sinclair escapes the punks, she and Kane's daughter run to meet her team at Glasgow Queen Street Station, but the station her team is eventually chased into, (or at least the set made to look like the station) is in fact Glasgow Central Station which is approximately half a mile to a mile away.
The road markings on the roads in "Scotland" are South African. The UK does not use dashed lines between two solid lines.
During the PM's brief, during which the contingency plan to isolate "All of London north of the river" is outlined, a map of London and the flood barrier is shown. Judging by the scale (approximately determinable by the readily recognizable kink in the Thames), the barrier only goes as far north as Hackney, and thus is isolating maybe 20-30 square miles out of the 600 or so square miles of London.
Any virologist would have immediately pointed out the possibility of natural immunity to the Reaper virus accounting for the presence of survivors in the quarantined zone.
Sol and his gang manage to find and chase the heroes with no foreknowledge of their mode of transportation or their course.
A mobile phone, fresh from the box, either with no SIM card or with a card that is not linked to a network, in a country with no mobile phone signal, is able to be charged by a car with a previously dead battery, and able to contact the Prime Minister.
There are dozens of farms surrounding Glasgow (where much of the film takes place), which produce cows, sheep, and chickens. So, contrary to what was said elsewhere, it is completely unfeasible for that many cows to have bred without folk eating them and being forced to resort to cannibalism instead.
Kane's Castle is a short horse ride from a military bunker in the mountains. Yet all the equipment in the bunker is pristine for the protagonists to use. Surely Kane would have picked it clean beforehand.
Despite dealing with a "killer virus" that's managed to get an entire country quarantined, the soldiers at the blockade are wearing nothing to protect themselves from infection - just gas masks, which will help against toxic gases but do next to nothing against something as small as a virus - and even have exposed skin, such as their hands and necks. Full biohazard suits might be a bit much to expect but surely the joins in their fatigues should be sealed with tape and all skin would be covered, at least.