During the filming process, Lily James stated that she had a scene where she had to walk through an area with zombie heads all around. Of course, most of them were fake props and she was directed to stomp on one. They would have supposedly gotten squished, however she stomped and realized everyone behind cameras were all staring at her in shock. She looked down and realized she stepped on one of the few extras' head.
Many of Lizzie's lines in her scenes with Mr Collins had to be cut as Lily James kept bursting out laughing at Matt Smith's delivery.
The actresses playing the Bennett sisters would train up to five times a week in combat fighting and boxing.
All the actresses playing the Bennet sisters did their own stunts for the film.
Several of the young cast members were inexperienced with making a comedy and would often turn to co-star Sally Phillips, who's a veteran in the field, for advice on how to improve their comic timing and delivery.