Kate Phillips (born 21 May 1989) is a British actress. She became famous for her role as Jane Seymour in the successful miniseries Wolf Hall (2015). She subsequently appeared in the miniseries War & Peace (2016), the first season of the television series The Crown (2016), and last three seasons of the television series Peaky Blinders (2016–2022). In 2019, she appeared as Princess Mary in the film Downton Abbey. Since 2020, she has appeared as Eliza Scarlet, the series lead, in the Victorian era crime drama, Miss Scarlet and The Duke.