Factual error: If you have ever actually seen London then you can see that the route Hallie takes to get to the house would take you all around London.
Factual error: During the plague when the fire and rocks are falling from the sky, they fall behind a statue of Rameses and are seen through its hollow eye holes. It makes for a great image, but that would mean that the statue's eyes were punched out like a mask, even though before they were just carved into the stone.
Factual error: The size of the shadow of an object depends upon its distance from the light source, not the surface it falls upon. Lifting the cutout of the bird a few inches closer to the sun as they do would make absolutely no difference to the size of its shadow, yet it quadruples in size.
Factual error: Near the end of the song "One Of Us" when Kovu is exiled, the beisa oryx at the front of the animal chorus (the one shaking her head slowly) has incorrect facial markings for her species. The other beisa oryx in the background has the correct markings. When she sings "He is not one of us," solo, she has correct facial markings, but lacks the correct leg markings, which she had when her facial markings were incorrect.
Factual error: In order to incapacitate the Fimples, the Commandos fire sleeping pills into their drink via a mouse trap converted into a catapult. But in every spring- or torsion-powered one-armed catapult, a horizontal bar is required which stops the arm as it swings forward, or otherwise the load would be smashed into the ground in front of the weapon.
Factual error: During the morning training session, Shang shot an arrow to the top of the pole so his soldiers can get it, but the arrow is stuck in a horizontal position. A difficult position to achieve, for someone shooting an arrow from below. Even if the arrow hit the pole at such a point in its arc, its kinetic energy would be at its weakest, preventing it from boring into the pole.
Factual error: When the plane takes off, the flight attendants on board are standing doing a safety demonstration. In real life the take off gradient is much steeper meaning they would either be thrown against the floor or at least find it difficult to stand. Also due to FAA regulation it is forbidden for anyone to stand on take off.