Olivia Kate Cooke is an English actress. In television, she has starred as Emma Decody in the thriller Bates Motel (2013–2017), Becky Sharp in the period drama Vanity Fair (2018), Alicent Hightower in the fantasy drama House of the Dragon (2022–present), and Sidonie Baker in the British spy thriller Slow Horses (2022-present).

Bates Motel is an American psychological horror drama television series based on characters from the 1959 novel Psycho by Robert Bloch that aired from March 18, 2013, to April 24, 2017. It was developed by Carlton Cuse, Kerry Ehrin, and Anthony Cipriano for the cable network A&E.