Set in the high-stakes world of 1980s British television, the second outing sees "power struggles escalate and rivalries deepen" whilst "ambition drives every move" and loyalties are pushed to the edge.
The story is based on the second book in Cooper's The Rutshire Chronicles series and will be told over 12 episodes, which is four up from the 8-part first season.
Emily was a silver siren as she arrived at the premiere in a show-stopping frock. The blonde bombshell, who plays Sarah Stratton, looked ravishing in the figure-hugging outfit as she posed for the cameras.
David turned the premiere into a family affair, as he was joined by his wife, Georgia, and daughter, Olive at the event. The star, who plays Lord Baddingham, looked excellent in a velvet suit, while Georgia rocked a daring turquoise mini-dress, and Olive looked sophisticated in a stylish black dress.
Katherine looked spectacular as she rocked an eye-catching multicoloured dress at the premiere. The star plays romance author Lizzie Vereker in the show.
Although Stanley doesn't star in the series, he looked very dapper in a grey suit as he arrived with his wife, Felicity Blunt, who looked flawless in a red dress. Who knows, maybe the pair would star in a third season…