Kit Harington has been cast as Gilderoy Lockhart in HBO's upcoming Harry Potter television series, replacing Nicholas Hoult who was previously attached to the role. This marks a significant casting change for the highly anticipated adaptation.

Nicholas Hoult has officially joined the cast of the HBO Harry Potter series, taking on the role of Gilderoy Lockhart for its second season. This casting marks his entry into the wizarding world, portraying the character from "Chamber of Secrets."

Kit Harington has been cast as Gilderoy Lockhart in the second season of HBO's Harry Potter series, replacing Nicholas Hoult who has exited the role. Harington, known for his role in Game of Thrones, will portray the vain Hogwarts professor.