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Dominic West and Sienna Miller to star in Sky and HBO Original thriller WAR, two series order confirmed

20/08/2025

Created by George Kay (Lupin, Hijack), and produced by New Pictures, WAR is a new scandal-soaked legal thriller set in the elite world of London lawWednesday 20 August 2025

Two rival London law firms take on the case of the century.

In a world of love, scandal, betrayal and ambition, winning is everything.

This is WAR.

Sienna Miller Headshot

JPEG (278 KB)

Dominic West Headshot

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Sky and HBO today announce WAR, a bold new legal thriller from the creator of Lupin and Hijack, starring Dominic West (The Wire, The Crown) as tech titan Morgan Henderson and Sienna Miller (Anatomy of a Scandal, American Sniper) as his estranged wife, international film star Carla Duval. Set in the elite world of London law, the series has been greenlit with a two-series commitment from Sky and HBO, following a deal brokered by Sky. It debuts with a scandalous divorce case that sends shockwaves through boardrooms, bedrooms, and courtrooms alike.

Created by Golden Globe nominated and Emmy and BAFTA Award-winning creator and showrunner George Kay (Hijack, Lupin, The Long Shadow) and directed by Ben Taylor (Sex Education, Catastrophe), WAR is coproduced by New Pictures (Catherine the Great, The Long Shadow) and Kay's Observatory Pictures, in association with Sky and HBO.

WAR follows two of London's most prestigious rival firms - Cathcarts and Taylor & Byrne - as they go head-to-head in the divorce case of the century. Each side is certain they'll win. But as the case spirals and loyalties fracture, reputations are on the line, and everyone's playing to win. This is just the beginning - season one's explosive case is the first in an anthology of headline-making legal battles.

Also joining the cast are, Phoebe Fox (The Great, Task) as Serena Byrne and James McArdle (Playing Nice, Mare of Easttown) as Nicholas Taylor, partners in life and business at Taylor & Byrne; Nina Sosanya (Screw, Baby Reindeer) as Her Majesty Beatrice Queen Bea Ubosi, and Pip Torrens (Succession, The Crown) as St John Smallwood, their counterparts and fierce rivals at Cathcarts; and Archie Renaux (Alien: Romulus, Upgraded) as ambitious lawyer Jonathan Johnny Warren.

George Kay, creator and writer, said: I am excited to be working with Sky and HBO - two homes for bold, ambitious storytelling - and our brilliant production team. WAR is a legal drama full of double crossing, scandal, twists and betrayal. The kind of TV show that made me want to write TV shows.

Willow Grylls, Executive Producer and CEO of New Pictures, said: George Kay has created an incredibly compelling cast of characters who will have audiences rooting for them, despite the underhand tactics, dirty tricks and win at all cost mentality they bring to battle against each other in - and out - of court. We are incredibly pleased to be trusted by Sky and HBO with a two series order to bring their stories to viewers around the world.

Meghan Lyvers, Executive Director of Original Scripted, Sky, said: We are thrilled to be working with George, Ben, Willow and team on WAR. The show is ambitious and provocative, brimming with unforgettable characters. It challenges the notions of power, identity, and success. We are proud to partner with New Pictures, Observatory Pictures and HBO on this distinctly modern drama."

Francesca Orsi, EVP, HBO Programming, Head of HBO Drama Series and Films, said: We've long admired George Kay's exceptional work and it's a privilege to bring him and his team to HBO for this wild and wicked examination of the brutal battlefield that is divorce. An inspired fusion of realism and satire, viewers are in store for gripping storytelling at its very best."

George Kay is the co-creator, writer, and executive producer of the Emmy Award nominated Apple TV+ returning series Hijack. He also created and wrote the Golden Globe and BAFTA-nominated and Critics Choice award winner Lupin, for Netflix. His other work includes BAFTA-winning series The Long Shadow and Litvinenko, which both aired on ITVX, and the International Emmy nominated Netflix show Criminal.

WAR is coproduced by New Pictures (an All3Media company) and Observatory Pictures, in association with Sky and HBO. The series is created, written and executive produced by George Kay, alongside Golden Globe and BAFTA Award-nominated executive producer Willow Grylls (Des, The Missing) and BAFTA Award-nominated executive producer Matt Sandford (The Long Shadow) for New Pictures, Ben Taylor (Sex Education, Catastrophe), Susan Breen (The Woman in the Wall, Bad Sisters), Andrea Dewsbury (I Hate Suzie, The Spanish Princess), and Megan Spanjian for Sky.

WAR will air on Sky and streaming service NOW in the UK, Ireland, Italy and Sky and WOW in Germany, Switzerland and Austria. It will air on HBO and HBO Max in the US, and stream on HBO Max in Australia. International sales of the series will be handled by NBCUniversal Global TV Distribution.

Contacts:

Sky: georgina.anthony@sky.uk

HBO: Diego.Aldana@wbd.com; Erin.Tresco@wbd.com

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