Millie Brady is a British actress whose professional acting career recently started in 2014. She debuted as Violette Selfridge on the British period drama series Mr Selfridge. Following this, she played Joan Collins in the 2015 biographical crime thriller film Legend. She next played Mary Bennet in the British-American feature Pride and Prejudice and Zombies. The movie was released in 2016. She became further known for her role as Æthelflæd on the British historical series The Last Kingdom. At the same time, she also played Princess Catia in the 2017 movie King Arthur: Legend of the Sword.