Anton Lesser (born 14 February 1952) is a British actor. He is known for his roles as Qyburn in the HBO series Game of Thrones, Harold Macmillan in The Crown, Clement Attlee in A United Kingdom, Chief Superintendent Bright in Endeavour, and Major Lio Partagaz in Andor. An associate of the Royal Shakespeare Company, he has performed numerous Shakespearean roles on stage and television.