The Undeclared War
- War & Politics
- Drama
- Sci-Fi & Fantasy
In the post-pandemic world of 2024 during an upcoming British general election involving the UK’s first Black Conservative prime minister, a leading team of analysts at the heart of the UK’s NSA-style spy agency GCHQ attempt to ward off a cyber-attack on the country’s electoral system.
The Undeclared War is a British political thriller series set in 2024, following GCHQ analysts as they work to prevent a cyber-attack on the UK's electoral system during a pivotal general election. The drama premiered in June 2022 and explores espionage and national security in a post-pandemic world.
When does The Undeclared War come out?
Where to watch
Streaming availability in United States
United States
Availability varies by country. A VPN can let you watch content licensed in another region, though most streaming services prohibit it in their terms of service. Use at your own discretion. Contains affiliate links.
Rent or buy
Digital purchase & rental in United States
Not available to rent or buy in United States yet. Available to rent or buy in: Belgium · Czechia · Denmark · Spain · Finland · France · Hungary · Japan · +6 more
Where to watch The Undeclared War by country
United Kingdom
Greece
Germany
France
Spain
Italy
Canada
Australia
BrazilTop cast
Follow an actor to track their next projects
Hannah Khalique-BrownSaara Parvan
Simon PeggDanny Patrick
Maisie Richardson-SellersKathy Freeman
Edward HolcroftJames Cox
Adrian LesterPM Andrew Makinde
Alex JenningsDavid Neal
Hattie MorahanElizabeth Kahn
Ed StoppardRichard Marston
Mark RylanceJohn Yeabsley
Julie BarclaySally J
Kirsty HoilesCaroline Fitch
Nitin GanatraAhmed Parvin
Gavi Singh CheraSajid Parvin- Robert CavanahCampbell Scott
- Alfie FriedmanGabriel Davies
Trailer
The Undeclared War | Official Trailer | Peacock Original
Seasons
2 seasons
Episodes · Season 2
Full season| # | Title | Air date | Runtime | Rating |
|---|---|---|---|---|
| 01 | Episode 1 | 2026-08-27 | — | 0.0 |
| 02 | Episode 2 | — | — | 0.0 |
| 03 | Episode 3 | — | — | 0.0 |
| 04 | Episode 4 | — | — | 0.0 |
| 05 | Episode 5 | — | — | 0.0 |
| 06 | Episode 6 | — | — | 0.0 |
Related & spin-offs
Other titles fans of The Undeclared War tend to follow.
Is The Undeclared War renewed or cancelled?
The Undeclared War is renewed — Season 2 premieres 2026-08-27.
Buzz around The Undeclared War
Recent reports and rumors specifically about this title.
- Confirmed8 days agoThe Undeclared War
The Undeclared War Season 2 confirmed to premiere on Channel 4 on July 21, 2026.
Date: 2026-07-21
radiotimes - Confirmed8 days agoThe Undeclared War
The Undeclared War season 2 officially confirmed for Channel 4 with returning cast including Simon Pegg and new addition Siân Brooke.
radiotimes
The Undeclared War — frequently asked
Where can I watch The Undeclared War?
The Undeclared War is available on Channel 4 in the UK. Availability on other streaming platforms varies by region.
How many seasons does The Undeclared War have?
Two seasons of The Undeclared War have been tracked. Season 1 premiered on June 30, 2022.
What is The Undeclared War about?
The series follows a team of analysts at GCHQ, the UK's intelligence agency, as they attempt to defend the country against a cyber-attack targeting the electoral system during a general election in 2024.
Is The Undeclared War based on a true story?
The Undeclared War is a fictional drama created for television, though it draws on real concerns about cyber-threats to critical infrastructure and electoral security.
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