Amazon MGM Studios has appointed Tom Lieber as head of scripted series in the U.K., following his previous role overseeing genre programming. Lieber will lead all new development and ongoing series, integrating functions from the Pan-English team. He will continue to manage prominent genre series such as The Lord of the Rings: The Rings of Power. Tara Erer will maintain oversight of existing shows and U.K. unscripted content.