Belgravia: The Next Chapter: Cast Rate: –☹️ Very Bad🙁 Bad😐 Average🙂 Good😃 Excellent🤩 Super! ★ Save Rating✔ Rating Saved! Notify me: –about new episodeabout new seasonabout end of season Subscribe✔ Subscription Saved! Belgravia: The Next Chapter Drama, History MGM+ United States GeneralEpisodesTranslationsCastCharactersGallery Cast See full cast → Harriet Slater as Clara Trenchard (née Dunn) Benjamin Wainwright as Frederick Trenchard Edward Bluemel as Dr. Stephen Ellerby Claude Perron as The Marquise D'Étagnac Elaine Cassidy as Davison