On Chesil Beach is a romantic drama film based on the novel of the same name by Ian McEwan. Anne-Marie Duff plays Marjorie Mayhew, the mother of the male protagonist. The film follows the story of Florence (played by Saoirse Ronan) and Edward (played by Billy Howle), a young couple who are about to embark on their honeymoon in 1962. Set against the backdrop of the sexual revolution and societal expectations, On Chesil Beach explores themes of love, intimacy, and the complexities of relationships. Anne-Marie Duff's performance adds depth and emotional resonance to the film, portraying a mother who struggles with her own past and the impact it has on her son's life.