Flanagan and Fogler join previously announced season 3 newcomer James Norton ("Happy Valley", "Little Women") as Ormund Hightower, the nephew of Otto Hightower (played by returning cast member Rhys Ifans) and cousin to Olivia Cooke's Alicent and Freddie Fox's Gwayne.

HBO announced House of the Dragon season 3 has begun production in the UK and Dan Fogler and Tommy Flanagan have joined the show.

Less than a year after its renewal, HBO's much-celebrated House of the Dragon has begun production in United Kingdom for its third season which will have eight episodes. Additionally, the makers had announced that two new actors had onboarded the cast of the upcoming season.