Goofs

The length of Excalibur's hilt changes between shots. One moment only a single hand can fit, and then two hands.

After Vortigern kills his daughter, Arthur fights the Blacklegs, and during the fight, he is wounded in the left arm, just under the shoulder. Once the fight is finished, his arm is unwounded.

Several times the country was called England. Arthur was King of Britain and the Britons. England was formed by the invading Anglo Saxons several centuries later.

Before Arthur and friends retreat to George's school, there a number of arrow shots that explode in the air. Since black powder (gunpowder) came from China in the 13th century and the legends about Arthur take place in the 5th-11th century, they could not have had exploding arrows.

In the throne room there is a flag of red and gold bells, inverted and upright. This flag belongs to the Ferrers family, Earls of Derby who only came to this country with William the Conqueror in 1066. The Anglo Saxon flag was a white Dragon on a red background, the Mercian flag is a yellow diagonal cross on a blue background.

In the beginning of the film, young Arthur and Catia (the daughter of Vortigern) are relatively the same age (both appear as young children in the beginning of the film - aged 2). After the characters "age" that there is a rather large age gap in age, while Catia only appears to have aged ten/fifteen years, Arthur appears to have aged twenty or more years in the same amount of time. But he has had a rough, hard scrabble life which can be said to have aged him prematurely.

At the end of the movie when King Arthur is talking to the Viking rep., He switches from working on the Round Table in a white shirt to a maroon vest and eating on the completed round table. A few more switches in clothing occur in the next sequence of knighting with Excalibur too.

Incorrectly regarded as a goof - this section involves time/scene jumps, the sections where the table is being built and men being knighted are at one time; the sections where Arthur is talking to the Vikings and the table is complete take place at a different time, they are interwoven hence the clothing changes.

The Vikings did not appear until 300 years later.

There was virtually no contact between Europe and China at this time, so there wouldn't be a kung fu gym in Londinium run by a Chinese man called George.

Several of the dogs shown in the scene when Arthur draws Excalibur and when his execution is about to occur are of breeds which would not have existed 1000 years ago.

The horsemen in the film are all using stirrups which would not be in widespread use in Europe until several hundred years after the setting of the film.

Eggs in Europe were brown and solid, not these modern American eggs with thin white shell.