Britain's first women police constables were employed in 1915; an important example of women showing they were capable of doing previously exclusive "men's work" during the First World War and not standing down afterwards.
In the movie Rose Gooding is Irish migrant. In real-life she was born in Lewes, Sussex, England. Jessie Buckley, who plays Rose, was born in Killarney, Ireland.
Although the actual events occurred in Littlehampton, the filming did not take place there. Instead nearby Arundel and Worthing were used. Arundel was used for town and street events. All the seaside filming was carried out in Worthing.
In real life, Olivia Colman is well known for using colourful language and liberally dropping the f-bomb in interviews.
In real life, Olivia Colman and Jessie Buckley are great friends. They bonded together whilst making the Maggie Gyllenhaal movie The Lost Daughter (2021) (for which they were both Oscar nominated) even though they didn't share any scenes.