The Undeclared War
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.
Ratings
Based on audience scoresWhere to stream The Undeclared War
Streaming now in the United States on Peacock Premium.
Trailers and promos
The Undeclared War | Official Trailer | Peacock Original
The Undeclared War - Channel4 trailer
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Frequently asked questions about The Undeclared War
Where can I watch The Undeclared War in the United States?
The Undeclared War is available to stream on Peacock Premium in the United States. Streaming availability is provided by JustWatch and can change over time.
Is The Undeclared War on Peacock Premium?
Yes. The Undeclared War is streaming on Peacock Premium in the United States.
Can I watch The Undeclared War for free?
Not free in the United States right now. The Undeclared War needs a subscription to Peacock Premium.
What are the ratings for The Undeclared War?
The Undeclared War scores 6.1 on The Movie Database.
Who stars in The Undeclared War?
The Undeclared War stars Hannah Khalique-Brown, Simon Pegg, Maisie Richardson-Sellers, Adrian Lester, and Sian Brooke. Peter Kosminsky is the creator.
How many seasons of The Undeclared War are there?
The Undeclared War has 2 seasons and 12 episodes, and is ended.
How long does it take to watch all of The Undeclared War?
All 12 episodes of The Undeclared War add up to about 9 hours 24 minutes at roughly 47 minutes each. At two hours a night that is about 5 evenings; at four hours a day it takes about 2 days.
What network is The Undeclared War on?
The Undeclared War airs on Channel 4, and is produced by Playground Entertainment, Universal International Studios, and Stonehenge Films.
Ratings and streaming availability are aggregated from third-party sources; metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked September 2026.