Dormer has become a well known television actor, more recently playing key roles in the Cinemax drama series Hunted and BBC One's Hidden. 2012 also saw Dormer taking over the role of Lord Beric Dondarrion, known as the "Lightning Lord", the leader of the "Brotherhood Without Banners" for Season 3 of HBO series Game of Thrones. In 2016, Dormer reprised his role as Dondarrion in the sixth season of the series and returned for the seventh season, airing in 2017.