Continuity: When the terrorists attack the van at the bridge, shortly after the explosion, you see the terrorists crossing the water in a boat. In the background you can see the van on the bridge with its doors open, shortly after this the terrorists are at the van doors demanding that the police open the van doors!

Continuity: When the bookshop keeper runs from his store in Piccadilly he enters Aldwich tube station this is impossible as said tube station is a 20 minute bus ride away. Also when he gets on the train the conductor announces that the train will stop at Leicester Square, Piccadilly circus (were he just left from), and Oxford Circus This is impossible, as no train on the London underground makes stops at all those stations. He would have to change trains at Piccadilly circus.

Factual error: Just before Sean Miller shoots the bookseller he takes the safety catch off the Ak-47. However, he moves the catch two clicks down and then fires the weapon on automatic. This is incorrect. For most modern weapons the safety catch feature goes safe-semi-auto, however the AK safety catch goes safe-auto-semi.

Other: The steamship shown in Patriot games is actually a shot from John Wayne's 1955 Sea Chase.

Continuity: In the final fight scene with Harrison Ford, the bad guy's hair grows longer then shorter then longer from shot to shot.

Continuity: When Cathy Ryan enters the highway off of Rowe Blvd (before the crash), she's supposedly heading toward DC. In fact, she continues back toward Annapolis instead of toward DC.

Continuity: When Jack rushes to save his wife and daughter from the terrorists on the freeway, there is a shot where he turns onto another road. Throughout this scene his seat belt goes from being buckled, to unbuckled quite a few times.