Dominic West and Sienna Miller star in HBO’s legal drama War, which premiered on October 1, 2026, centering on a high-profile divorce battle in London. Created by George Kay, the eight-episode series follows tech billionaire Morgan Henderson and his A-list actress wife, Carla Duval, as their marriage collapses into what one of the lawyers predicts will be the “biggest divorce trial in British legal history.” The show is intended as an anthology series where each season focuses on a different case involving two dueling London law firms.
Dominic West and Sienna Miller Lead London Divorce Drama
The show takes its place among television dramas about the super-rich, sharing tone and scale with shows like Succession and Billions. As the proceedings begin, both spouses face intense scrutiny over the validity of a prenuptial agreement signed when Carla earned significantly more than the would-be pioneer in global social media who had not yet made his fortune. In the present day, however, Henderson is by far the wealthier of the two. The leads are played by the 56-year-old West and the 44-year-old Miller.
Sienna Miller explained that she approached her role strictly through a creative lens rather than drawing from her own encounters with press intrusion. “I don’t feel necessarily that I need to spend more time exploring press intrusion and paparazzi,” Miller said. She added, “I think I’ve had enough for a lifetime of that in my own world.” Dominic West noted that viewing the pressure through a billionaire’s eyes offered a unique perspective on public turmoil. West, who previously played Jimmy McNulty on The Wire, often delivered the line “What the f*** did I do?” as an indignant question about why he was being yelled at.
Cathcarts And Sons Versus Taylor And Byrne Law Firms
The legal battle is fought between two rival London firms with sharply contrasting aesthetics and strategies. Morgan is represented by Cathcarts & Sons, a storied institution characterized by dark-wood interiors and ruthless partners. St. John Smallwood, played by Pip Torrens, heads the charge alongside Beatrice Ubosi, known as “Queen Bea,” with Nina Sosanya in the role. Other members of the Cathcarts team include David Schill, played by Miles Jupp, and Suzie Levitniik, played by Kartanya Maynard. Meanwhile, Carla hires Taylor & Byrne, a contemporary glass-walled firm run by married attorneys Nicholas Taylor and Serena Byrne, played by James McArdle and Phoebe Fox. The couple is expecting a child.
Serena brings an added chip to her shoulder because she previously worked with Beatrice at Cathcarts. The firms employ aggressive tactics before papers are even served. Cathcarts orchestrates a covert operation by recruiting a desperate young attorney named Johnny Warren, played by Archie Renaux, fresh from a stint in Manhattan. Warren is a British native who earned his law degree at the University of Michigan. Cathcarts offers Johnny a job not to work for them directly, but to act as a mole inside Taylor & Byrne by feeding confidential case details back to Cathcarts.
Taylor & Byrne’s staff includes barrister Budgie, played by Celia Imrie, and training associates Molly Giordano (Emma Laird) and Saeed Masood (Shaheen Jafargholi). Associates Nora Okafor (Akiya Henry) and Michael Stefano (Nick Mohammed) are also introduced briefly in the first episode.
Behind the Mole Strategy and Production Choices
Show creator George Kay discussed the inspiration behind the legal maneuvers, noting that the dramatic service of papers draws inspiration from real-world tropes, like what happened with Olivia Wilde, though the plot remains a work of fiction. Kay pointed out that if Cathcarts’ mole strategy were discovered, the lawyers involved could be struck off from the legal world, though the firm builds deliberate defense mechanisms into the scheme. Regarding the recruitment of Warren, Archie Renaux told Mashable that “desperation is the more straightforward answer.”
Dominic West shared that he pushed to make his tech mogul character slightly softer. “I argued for Morgan to be nicer, because I’m desperate to be liked generally,” West said. He later admitted, “I probably made him softer than we should have done.” On the other side, Miller maintains distance from her character’s approach to public perception, stating that she does not concern herself with what people think of her professional choices. “I feel so different to [Carla] as a character,” Miller said.
Frequently Asked Questions About The Series War
When did War premiere on HBO?
The eight-episode legal drama premiered on October 1, 2026, airing on HBO and streaming on Max, with new episodes releasing on Thursdays at 9 p.m. Eastern. Listeners can find more discussion on Pop Culture Happy Hour via Spotify and Apple Podcasts.
Who represents Morgan Henderson and Carla Duval in the show?
Morgan is represented by the established firm Cathcarts & Sons, led by partners St. John Smallwood and Beatrice Ubosi, while Carla is represented by the newer firm Taylor & Byrne, founded by married attorneys Nicholas Taylor and Serena Byrne.
What role does Johnny Warren play in the legal proceedings?
Johnny Warren is a junior associate who secures a job at Taylor & Byrne after being recruited by Cathcarts & Sons to act as an internal spy and feed confidential information back to Morgan’s legal team.
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