War is the new legal drama starring Dominic West and Sienna Miller. Here’s where to watch War in the UK and US, when it premieres, the episode schedule, cast and everything else you need to know.
A new legal drama is about to arrive on both sides of the Atlantic, with Dominic West and Sienna Miller going head-to-head in War.
The eight-part series comes from George Kay, the creator of Lupin and Hijack, and follows two rival London law firms as they become embroiled in a bitter, high-profile divorce case.
For viewers searching for where to watch War, the answer depends on which side of the Atlantic you’re on.
In the US, War premieres on HBO and HBO Max on October 1, 2026.
In the UK, it arrives on Sky and NOW on October 2, 2026.
Where to watch War in the US
US viewers can watch War on HBO and HBO Max.
The series premieres on Thursday, October 1, with the first episode airing on HBO at 9pm ET/PT. It will also be available to stream on HBO Max.
New episodes will then be released weekly on Thursdays.
US viewing details
| US | |
|---|---|
| Where to watch | HBO / HBO Max |
| Premiere date | Thursday, October 1 |
| Premiere time | 9pm ET/PT |
| Episodes | 8 |
| Release pattern | Weekly |
HBO’s official October schedule confirms that War is an eight-episode HBO/Sky Original, with episodes debuting weekly on Thursdays.
Where to watch War in the UK
UK viewers can watch War on Sky and NOW.
The UK premiere is Friday, October 2, 2026. Sky has not announced a specific UK premiere time in the information currently available, so viewers should check their Sky or NOW listings closer to launch.
UK viewing details
| UK | |
|---|---|
| Where to watch | Sky / NOW |
| Premiere date | Friday, October 2 |
| Episodes | 8 |
| Release pattern | Weekly |
So, despite War being an HBO title in the US, UK viewers should not look for it on HBO Max. The UK rights are with Sky and NOW.
When does War premiere?
The premiere date depends on your country.
US: Thursday, October 1, 2026
UK: Friday, October 2, 2026
In the US, HBO has scheduled the first episode for 9pm ET/PT, with the series then continuing weekly.
The UK premiere follows the next day on Sky and NOW.
This difference is worth knowing because searches for the US release date can otherwise be confusing for British viewers.
What is War about?
War is a high-stakes legal drama centred on two powerful London law firms.
The story begins with the explosive divorce of Morgan Henderson, a wealthy British technology entrepreneur played by Dominic West, and Carla Duval, an international film star played by Sienna Miller.
Their divorce quickly becomes much bigger than a private family dispute.
Two rival law firms — Taylor & Byrne and Cathcarts & Sons — go head-to-head over the case, turning the divorce into a battle involving money, reputation, power and professional ambition.
At the centre of the story is young lawyer Jonathan “Johnny” Warren, played by Archie Renaux, who finds himself caught up in the ruthless competition between the two firms.
Who is in the cast of War?
The series has a substantial British cast, led by Dominic West and Sienna Miller.
Main cast
- Dominic West as Morgan Henderson
- Sienna Miller as Carla Duval
- Archie Renaux as Jonathan “Johnny” Warren
- Phoebe Fox as Serena Byrne
- James McArdle as Nicholas Taylor
- Nina Sosanya as Beatrice “Queen Bea” Ubosi
- Pip Torrens as St John Smallwood
The wider cast includes Celia Imrie, Nick Mohammed, Emma Laird, Archie Panjabi, Adrian Scarborough, Miles Jupp and others.
Who created War?
War was created and written by George Kay, whose previous television credits include Lupin and Hijack.
The series is co-produced by New Pictures and Observatory Pictures, in association with Sky and HBO. Ben Taylor is the lead director.
The combination of a major British cast, a London setting and the HBO/Sky partnership makes War something of a transatlantic production: it is being released through HBO in the US and Sky in the UK.
How many episodes of War are there?
War has eight episodes in Season 1.
Unlike some Netflix releases, the entire season will not arrive at once.
HBO has confirmed that episodes will be released weekly on Thursdays in the US.
The UK will likewise receive the series as a weekly drama through Sky and NOW.
That means viewers who start watching when the series premieres will have several weeks of War to follow rather than being able to binge the entire season immediately.
War episode schedule
The US episode rollout begins October 1.
| Episode | US release | UK release |
|---|---|---|
| Episode 1 | October 1 | October 2 |
| Episode 2 | October 8 | October 9 |
| Episode 3 | October 15 | October 16 |
| Episode 4 | October 22 | October 23 |
| Episode 5 | October 29 | October 30 |
| Episode 6 | November 5 | November 6 |
| Episode 7 | November 12 | November 13 |
| Episode 8 | November 19 | November 20 |
The weekly pattern follows the confirmed Thursday US rollout, with the UK release following a day later.
Note: UK broadcast/streaming times should be checked against Sky and NOW listings as the individual dates approach.
Is War based on a true story?
No. War is a fictional legal drama.
The story about Morgan Henderson and Carla Duval’s divorce is fictional, as are the rival law firms at the centre of the series.
However, the premise draws on recognisable elements of high-profile celebrity divorces, media scrutiny and battles between wealthy clients.
The series explores what happens when a very public personal breakdown becomes a professional and legal war.
Is War a Sky Original or HBO show?
It’s both.
War is an HBO/Sky Original produced as a collaboration between the two companies.
The distribution differs by territory.
In the US, it is an HBO title and streams on HBO Max.
In the UK, it is a Sky Original and is available through Sky and NOW. The series also has different release dates in the two markets.
Is War on HBO Max in the UK?
No.
Although War is being released on HBO Max in the US, UK viewers should watch it through Sky or NOW.
This is an important distinction for British viewers searching for the show, because HBO Max’s US release information does not mean that the programme is available on HBO Max in Britain.
Is War worth watching?
The series has already attracted attention ahead of its premiere because of its combination of Dominic West, Sienna Miller and a high-profile legal drama premise.
Reviews have highlighted the show’s glossy, high-stakes approach to the divorce story, with the Financial Times describing it as an eight-episode drama built around the battle between the two law firms.
Radio Times has also reviewed the series ahead of its UK release, describing it as a divorce drama centred on West and Miller.
For viewers who enjoy legal dramas, celebrity scandals, family battles and shows built around competing power players, War is clearly positioned as one of the bigger new dramas arriving in October.
War: UK and US viewing guide
Here’s the quick answer if you’re searching for where to watch War:
🇺🇸 US: HBO and HBO Max
Premiere: October 1, 2026
Time: 9pm ET/PT
Episodes: 8
🇬🇧 UK: Sky and NOW
Premiere: October 2, 2026
Episodes: 8
Created by: George Kay
Starring: Dominic West, Sienna Miller and Archie Renaux
Format: Legal drama
Release: Weekly
War is coming to HBO Max and Sky in October
War is one of the major new dramas arriving at the start of October, but UK and US viewers will watch it through different services.
American viewers can start watching on HBO or HBO Max from October 1, while British viewers can watch on Sky and NOW from October 2.
With eight episodes arriving weekly, the Dominic West and Sienna Miller drama is set to run through November, giving viewers a new episode to follow each week.
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