Factual error: When the Chinese are loading crates onto the truck with St Paul's in the background, two much more modern buildings are visible either side of the cathedral - out of keeping with the 1910s/20s setting.
Other mistake: Peter Chang is billed in the opening credits as the one and only Fighting Instructors, plural.
Character mistake: In the fight in the Shaolin temple the Bruce Lee impersonator fights 4 monks who are supposed to attack him simultaneously, and they do, but Miss amazingly obvious openings, to the point of spending long seconds hopping around without attacking. Many martial arts movies feature as Common Mistake the main character facing multiple enemies that fight quite inefficiently, but few are this obvious when it comes to waiting a cue. (00:13:00)
Continuity mistake: The line of traffic on the landing side of Tower Bridge is completely different to when the jaguar lands and the capri lands.
Continuity mistake: When Molly dismounts her horse near the end of the movie the blanket slides off. A second later the blanket appears back on the horse.
Factual error: On their journey, Rooster is bragging about his navy colts, when actually his sidearm is a Colt .45 Peacemaker, also known as an Army Colt M1873.
Continuity mistake: After Willy Clark has a heart attack, Al Lewis goes to his apartment for a visit. Willy's nephew Ben is standing between the two men with his right hand resting across his stomach. In the long shot, his right arm and hand are alongside his body.
Continuity mistake: When Gary is in the restaurant with Julia he writes out the card asking Joe Baker to join them. As soon as Gary picks up his pen the angle changes and the note is written in full.
Revealing mistake: When the motorbike randomly explodes after Terri and Dave get out of the car, it is obvious that the explosion does not come from the bike, but from the shrub behind it, which also happened to creep up closer between shots. (00:07:30)
Continuity mistake: Friday is at the fashion show, and after arguing with her friend who called her on NYE, she is talking with the photographer. She is about to playfully slap him; between these two shots a quite noticeable lady in furs and purple polka dot dress is walking from left to right in the first one, right to left in second. (00:20:55)
Factual error: This film is set in the 1960's. The Ford transit van belonging to Russell, the group's roadie, is a facelifted 1971 model.