Continuity mistake: Every time they show the outside of the bookstore, on the left you see the same adult drying a child's tears. (00:17:55)
Continuity mistake: When William takes Anna back to his flat, after the orange juice incident. His shirt is stained, she comes into the flat and changes. Then she leaves. When she returns to get her books, his shirt is still stained but after she kisses him the stain is gone. An impressive kiss... (00:16:45)
Continuity mistake: In one scene in the bookstore, there are three copies of a guide to Germany on the table next to Hugh Grant. In one clip, there are three spines, in the next two of the books have been turned round.
Continuity mistake: When William is interviewing Anna in the hotel suite, behind the lever door handles, there are two wide, brass, open lattice finger plates, which change to narrow, brass, closed lattice finger plates. (00:27:30)
Continuity mistake: At the bookstore, in the wide shots the surveillance monitor is sitting in the center of four large books, yet in the close-up of the monitor, showing Rufus, the shoplifter, there is another book lying on the larger books, to the left of the monitor. (00:06:15 - 00:07:05)
Continuity mistake: When Will leaves after the interview his formerly brown jacket is grey and his hair is differently combed. (00:29:30)
Continuity mistake: After William leaves the movie set, in the next shot he goes back to the book shop. Seen through the window is the table with the books and globes. Then when Anna is standing near the window, we see that there are completely different kinds of books on the top shelf now. (01:39:10)
Continuity mistake: When Anna muses over the size of Will's feet he is reading the newspaper. Check the picture on the back of the paper - it changes although there is no sign that he turns a page. (01:10:45)
Continuity mistake: The orange juice stain on Will's shirt changes size and shape from shot to shot throughout the whole scene. (00:11:45)
Continuity mistake: In the scene where Julia Robert's character first goes to Hugh Grant's character's flat, there's a chalkboard that's telling Spike to clean up. It's quite small writing, but in a close-up of Hugh Grant when he's directing her upstairs it's clearly larger. It then goes small again until she comes downstairs, when it goes large and stays that way. (00:12:10)
Continuity mistake: At the period film set, Will's glasses vanish as he is getting up to leave. (01:38:50)
Visible crew/equipment: When Hugh bumps into Julia and spills orange juice over her, she raises her face and you can see a boom mic reflected on her left lens, and crew members on the right one. (00:12:00)
Continuity mistake: At the beginning of Honey's birthday party Bella's blouse first reveals the right, then the left shoulder in successive shots. (00:33:35)
Answer: According to this site, it was planned. http://nldslab.soe.ucsc.edu/charactercreator/film_corpus/film_2012xxxx/imsdb.com/Notting-Hill.html They both smile - suddenly the press gets what's going on - music - noise - they all turn and flash, flash, flash photos of William. Max and Bella kiss. Bernie kisses a total stranger. Spike finally makes it - he's bright red from running.
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