How to watch The Undeclared War online: stream the new Channel 4 thriller from anywhere

Simon Pegg and Adrian Lester stand at podiums in The Undeclared War
(Image credit: Channel 4)

Delving into the covert world of cybersecurity comes the latest drama from award-winning director Peter Kosminsky about a government department contending with a series of possibly catastrophic cyberattacks. You can find out more in our guide below, where we'll explain how to watch The Undeclared War online and 100% FREE with All 4 in the UK.

Watch The Undeclared War online

Release date: Thursday, June 30 at 9pm BST

Stream: FREE on All 4 – live or catch-up

International streaming: Stan (AUS) |Aug 18 on Peacock (US)

Watch anywhere: try a 100% risk-free VPN

Created, executive produced and directed by Kosminsky (Wolf Hall, The Government Inspector), The Undeclared War explores “how the next few years might play out in the domain of cyber warfare – a battle unseen by the public but with potentially devastating consequences.”

Newcomer Hannah Khalique-Brown is Saara Parvan, picked for a prestigious job with a team of government cyber analysts at GCHQ. Her abilities are soon tested when they become the focus of a malicious cyberattack, suspected to be an attempt by Russia to instigate civil disorder.

Simon Pegg plays it straight as Head of Operations Daniel Patrick, while Adrian Lester (Hustle, Trigger Point) is PM Andrew Makinde, facing nationwide upheaval on the eve of the 2024 election. They'll feature alongside Legends of Tomorrow actor Maisie Richardson-Sellers and Academy Award-winner Mark Rylance, a retired Cold War vet whose expertise are desperately needed.

It looks set to be a pulse-raising thriller full of timely intrigue, and below we detail how you can watch The Undeclared War online from anywhere.

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How to watch The Undeclared War online for FREE in the UK

Channel 4's All4 streaming service

In the UK, new cyber thriller The Undeclared War will be available FREE on Channel 4 from Thursday, June 30 at 9pm BST, with subsequent episodes broadcast weekly at the same time.

If you don’t have satellite, cable or Freeview, tune in live or watch episodes on-demand through Channel 4's All4 streaming service. Outside of the UK?

Use a VPN to watch The Undeclared War from abroad.

All 4 is available on a number of devices, including your laptop, or via apps you can download for Android, iOS, PS4, Xbox, Roku and Amazon Fire.

How to watch The Undeclared War online outside your country

If you're keen to watch The Undeclared War online while off on holiday or abroad for business, you’ll likely encounter annoying geo-restrictions that will prevent you from accessing your usual streaming service.

Luckily, getting the best VPN – otherwise known as a virtual private network – offers a simple solution. It alters your IP address to make it appear like you’re somewhere else. While this can be used for privacy, it can also be used to access your preferred streaming platform back home, even when you're out of the country.

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ExpressVPN - get the world's best VPN
There are hundreds of VPNs available, but our favorite is ExpressVPN. It's quick to connect to, easy to use, and highly secure. Plus, it’s compatible with a wide range of devices. And what makes ExpressVPN particularly enticing is its flexible 30-day money back guarantee. Better yet, if you sign up for an annual plan you'll get 3-months extra FREE – a brilliant offer TV addicts won’t want to miss.

How to use a VPN to watch The Undeclared War

Three simple steps to using a VPN to watch The Undeclared War online:

1. Download and install a VPN - we recommend ExpressVPN

2. Connect to the relevant server location - launch the VPN app, click on 'choose location' and select the right location i.e. UK for All 4

3. Head to the chosen broadcaster's live stream - in this case, head to the All 4 website or app

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How to watch The Undeclared War online in the US

Peacock TV

The Undeclared War is coming to NBC’s streaming platform Peacock TV, but US residents have to wait until Thursday, August 18 – a few weeks after the finale airs in the UK – before enjoying all-6 episodes of the gripping new drama, available to binge immediately at 3 am ET / 12 am PT.

While the first episode will likely be free to stream with the Peacock TV Free subscription, you’ll definitely need a Peacock Premium plan to stream the following episodes, which is ad-supported and costs $4.99 a month.

Alternatively, upgrade to Peacock Premium Plus for $9.99 a month, which will strip out any ads and allow you to download and watch offline. You could also save an extra 10% on the Peacock price by purchasing an annual plan.

Peacock is available on PCs and laptops, as well as iOS and Android devices, Android and Apple TV, Chromecast, PlayStation, Xbox, Vizio Smartcast, select LG smart TVs, and more.

Away from home? You can connect to All 4 from abroad by using a VPN to change your geo-location to your home country.

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How to watch The Undeclared War online FREE in Australia


The Undeclared War will stream concurrent with its UK release Down Under and exclusively on Stan, where The Undeclared War will be available to watch from about 6am AEST on Friday, July 1.

Following a free 30-day trial, Stan is currently offered in three paid tiers: Stan Basic gives you one SD stream for AU$10 per month, Stan Standard grants you three HD streams for AU$14 per month, and Stan Premium gets you four 4K streams for AU$19 per month.

If you're an Aussie that's currently out of the country, you can also use a good VPN to regain access to all the same services and content you'd normally watch (and pay for) in your country of residence.


How to watch The Undeclared War online in Canada


No exact release date has been announced, but it's been confirmed that The Undeclared War will arrive on the Showcase channel in Canada sometime in 2022/2023.

You can get Showcase through cable, watch it live online or on-demand through the Global TV app, or purchase an OTT Amazon Prime subscription (CAD$7.99 a month after your free trial) with a subscription to StackTV tacked on through Amazon Channels. New and returning customers get a 30-day free trial. And, if you decide to keep the subscription after this time, membership costs CAD$12.99 a month in addition to your basic Amazon Prime sub.

Daniel Pateman

Daniel Pateman is a freelance writer, producing articles across the cultural spectrum for magazines like Aesthetica, Photomonitor, The Brooklyn Rail and This is Tomorrow. He also provides text-writing services to individual curators and artists worldwide, and has had work published internationally. His favourite film genre is horror (bring on Scream 5!) and he never tires of listening to Absolute 80s on the radio.