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: 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: 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.
Continuity mistake: When Hill announces Lady Catherine de Bourgh's arrival at Longboure, 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)