Key Highlights
- HBO’s legal drama War frames the acrimonious split between actor Carla Duval and tech mogul Morgan Henderson as a battlefield between two radically different London law firms.
- Established powerhouse Cathcarts & Sons represents Morgan Henderson, led by formidable partners St. John Smallwood and Beatrice Ubosi.
- Challenger firm Taylor & Byrne, helmed by expectant spouses Nicholas Taylor and Serena Byrne, represents Carla Duval but faces immediate sabotage through an embedded mole.
While the central conflict of the high-stakes legal drama War stems from the deteriorating marriage between celebrated actor Carla Duval (Sienna Miller) and tech entrepreneur Morgan Henderson (Dominic West), the narrative engine is driven equally by the competing legal gladiators orchestrating their split. Behind the warring spouses stand two fiercely competitive London practices: established titan Cathcarts & Sons and rising boutique firm Taylor & Byrne. With both legal teams maneuvering for financial survival, professional supremacy, and personal leverage, keeping track of the key players and their hidden agendas is crucial from the opening chapter.
The Old Guard: Inside the Powerhouse Cathcarts & Sons
Widely referred to throughout the series simply as Cathcarts, Cathcarts & Sons represents the epitome of legal prestige in the United Kingdom. Blessed with deep corporate pockets, a venerable history, and immense cultural clout, the institutional firm takes on the challenge of defending Morgan Henderson’s massive fortune with ruthless precision.
Key Figures Leading the Cathcarts Roster
Directing the firm’s attack strategy are senior partners St. John Smallwood (Pip Torrens) and Beatrice Ubosi (Nina Sosanya). Smallwood wields a blistering, caustic wit capable of cutting down courtroom adversaries with ease. Alongside him stands Ubosi, whose sheer commanding presence and strategic dominance have earned her the formidable nicknames of “Queen Bea” and “Her Majesty.”
Rounding out the active litigation bench for Cathcarts are David Schill (Miles Jupp) and junior colleague Suzie Levitniik (Kartanya Maynard), both deployed to help safeguard Morgan’s vast corporate empire against Carla’s legal claims.
The Challenger Firm: The Fragile Ambitions of Taylor & Byrne
Representing Carla Duval is Taylor & Byrne, a much younger, boutique enterprise founded by husband-and-wife legal duo Nicholas Taylor (James McArdle) and Serena Byrne (Phoebe Fox). The high-profile matrimonial dispute represents a make-or-break crossroads for the firm. With the couple currently expecting a child and maintaining overhead costs on their sleek, contemporary office space, the Duval case offers the potential to catapult them into elite standing or bankrupt their venture entirely.
The clash carries deeply personal stakes for Serena, who previously worked under Beatrice Ubosi at Cathcarts. Facing her former mentor provides Serena with an undeniable incentive to prove herself against her former employers.
Associates, Barristers, and an Embedded Saboteur
Nicholas and Serena depend on a diverse legal collective, including associates Michael Stefano (Nick Mohammed) and Nora Okafor (Akiya Henry), alongside seasoned barrister Budgie (Celia Imrie). Trainee associates Saeed Masood (Shaheen Jafargholi) and Molly Giordano (Emma Laird) also handle frontline preparations for Carla’s proceedings.
However, the firm’s biggest vulnerability lies in its newest addition: junior associate Johnny Warren (Archie Renaux). In a stunning narrative twist concluding the premiere episode, Warren is exposed not as a loyal recruit, but as an undercover operative placed directly inside Taylor & Byrne by Cathcarts to funnel confidential case intelligence back to Smallwood and Ubosi.
Why This Matters
The structural design of War subverts standard courtroom procedural formulas by examining high-net-worth divorce through the cutthroat mechanics of institutional competition. Rather than focusing solely on the celebrity couple, the drama underscores the reality of modern legal conflicts, where vast resources, historical networks, and covert corporate espionage can outweigh the merits of the case itself. With Johnny Warren actively leaking Carla Duval’s defense strategies to Cathcarts, subsequent episodes will test whether Taylor & Byrne can protect their client without compromising their own operational and ethical boundaries.
Frequently Asked Questions
Who represents Carla Duval and Morgan Henderson in War?
Carla Duval (Sienna Miller) is represented by boutique law firm Taylor & Byrne, founded by Nicholas Taylor (James McArdle) and Serena Byrne (Phoebe Fox). Morgan Henderson (Dominic West) is defended by elite heritage firm Cathcarts & Sons, led by partners St. John Smallwood (Pip Torrens) and Beatrice Ubosi (Nina Sosanya).
What is the major twist involving Johnny Warren in episode 1?
Although Johnny Warren (Archie Renaux) is introduced as a newly hired junior associate at Taylor & Byrne, the end of the premiere episode reveals that he is secretly working as a mole for Cathcarts & Sons, passing confidential details regarding Carla Duval’s case to her husband’s legal team.
When and where can viewers watch new episodes of War?
New episodes of War air on Thursdays at 9 p.m. ET across HBO and are available to stream on HBO Max.




