Continuity mistake: During the Ball scene at Netherfield, right before one of the dances, a shot of Lizzy reveals Jane in the background moving in slow motion.
Continuity mistake: In the scene at Pemberley when Darcy gets ready to dive into the pond, notice that in one shot, he is looking at the pond, the next shot shows him stepping down, and the third shot (right before he dives) shows him looking at the pond again - in the exact same place as the first shot, as if he never took the step down.
Continuity mistake: On disc 2, in the scene where Hannah is leaning out the window to tell Lizzie that the two gentlemen were waiting for her, you can see two gentlemen riding up the lane behind her. As the shot changes to Lizzie's face, they pass her. Then, when the shot changes back to both Hannah and Lizzie, the brown horse passes her again. (00:51:15)
Continuity mistake: In the scene where Lizzie is reading Jane's letters, telling her that Lydia has "thrown herself into the power of Mr. Wickham", she leaves the letters on the table standing next to her, in order to go and search for Mr and Mrs Gardiner. However, a few shots later when she's sitting at the table with Mr Darcy, the letters are neatly composed on top of each other. It's very unlikely that she left the letters that way.
Continuity mistake: When the Bennet family is sitting at the table and discussing going to Brighton, the level of wine in Mr. Bennet's glass changes from shot to shot.
Continuity mistake: In the outdoor scene at Pemberley, when Darcy is showing Mr. Gardner the good spots to fish, Darcy turns away and starts to walk with Lizzie up a path with the Gardners starting to follow. The camera changes to another angle and now Lizzie and Darcy are several terrace levels up the path (much further along the path than before) as they start talking.
Continuity mistake: At the end, where Darcy is making his second offer of marriage, Lizzy starts off with:"You must allow me to tell you how grateful I am." Look at the horses in the back: they are right behind Colin and Jennifer. In the next shot however, the horses are much further behind. One of Colin's lines has been cut out: when you read the book, Darcy says between Lizzie's lines something like: "I didn't know your aunt could not be trusted."
Continuity mistake: Just after Lizzy thanks Mr. Darcy for helping out with Lydia, her bonnet's ribbon is tied very differently between shots.
Continuity mistake: During the wedding, there are flashes of the different people from throughout the story. In the one showing Lady Catherine and her daughter, in the first shot, Anne can be seen sitting very close to the arm of the sofa, but in the zoom out, she is further along.
Suggested correction: This is just a distortion of perspective because of two different camera angles. If you look at the pattern on the sofa upholstery you can see she is sitting in the same spot in both shots, midway between two vertical panels with red borders.
Continuity mistake: Darcy is seen going upstairs to write to Lizzie after she refuses his proposal, yet just before the flashback begins, he looks out the window and is on the ground floor. (00:02:10 - 00:03:25)
Episode #1.3 - S1-E3
Continuity mistake: When Elizabeth is about to leave for Hunsford there are three trunks (1 large, 2 small) visible in the hall. As Elizabeth moves into the study the servant removes the top trunk to take to the carriage. In the next shot of Elizabeth in background only the large trunk remains. In subsequent views of Elizabeth the large trunk remains in view. When Elizabeth farewells her father and leaves the room the servant is seen picking up the second small trunk which has magically reappeared. (00:23:30 - 00:24:10)
Continuity mistake: When Hill announces Lady Catherine de Bourgh's arrival at Longbourn, she says the name and has her back against the door. When the camera zooms out, she is further up, standing beside the door, and when it zooms in, she is in the original position. (00:30:30)
Episode #1.5 - S1-E5
Continuity mistake: The day that they received Mr. Gardiner's express letter, Jane is wearing a pink gown and Elizabeth a white. The next scene is possibly that evening before bed where Elizabeth tells Jane she wishes she never told Mr. Darcy about Lydia. The following scene looks like the next day, when Jane and Elizabeth tells Mrs. Bennet about the letter, and they are wearing the same outfits from presumably the day before. When Elizabeth goes down to her Father and they start talking, she says, "considering what we thought only a few hours ago." Which means the before bed scene was cut from after Lydia's and Wickham's wedding, because it shows a flash to Mr Darcy. Which is the same scene of him at the wedding which hasn't happened yet.
Episode #1.5 - S1-E5
Continuity mistake: Jane and Lizzy are talking in Lizzy's bedroom about how Lydia's elopement has affected their chances of finding respectable husbands. The cream-colored shawl on Lizzy's left shoulder appears and disappears depending on the angle. (00:31:35)