The Undeclared War poster
Where to stream

The Undeclared War

6.020222 seasons18+TV SeriesWar & PoliticsDramaSci-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.

Where to watch

StackTV Amazon ChannelStackTV Amazon Channel
Availability shown for Canada · rights vary by country

Seasons & Episodes

E1
Episode 1
Jul 21, 2026 1.0
E2
Episode 2
Jul 22, 2026 1.0
E3
Episode 3
Jul 28, 2026 1.0
E4
Episode 4
Jul 29, 2026 1.0
E5
Episode 5
Aug 4, 2026 1.0
E6
Episode 6
Aug 5, 2026 1.0

Cast

HKHannah Khalique-Brown
Hannah Khalique-Brown
Saara Parvan
SPSimon Pegg
Simon Pegg
Danny Patrick
MRMaisie Richardson-Sellers
Maisie Richardson-Sellers
Kathy Freeman
ALAdrian Lester
Adrian Lester
PM Andrew Makinde

More like this

Secret Service
Secret Service
2026 · 6.7
Zero Day
Zero Day
2025 · 7.0
Homeland
Homeland
2011 · 7.6
Counterpart
Counterpart
2017 · 7.5
Roadkill
Roadkill
2020 · 6.4
Traitors
Traitors
2019 · 6.1
Ultimate Force
Ultimate Force
2002 · 6.5
The Comey Rule
The Comey Rule
2020 · 6.9
The Ipcress File
The Ipcress File
2022 · 7.1
Colony
Colony
2016 · 6.9
Bodies
Bodies
2023 · 7.1
Years and Years
Years and Years
2019 · 7.5

The Undeclared War — streaming FAQ

Which OTT platform streams The Undeclared War?

The Undeclared War is streaming on StackTV in Canada. It's not currently on Netflix.

Is The Undeclared War on Netflix?

No, The Undeclared War is not on Netflix in Canada as of August 2026. It's currently on StackTV.

Is The Undeclared War on Amazon Prime Video?

No, The Undeclared War isn't on Amazon Prime Video in Canada right now. It's on StackTV instead.

Where can I watch The Undeclared War for free?

The Undeclared War is available on StackTV in Canada, but you'll need an active subscription — there's no free option right now.

How many seasons are in The Undeclared War?

The Undeclared War has 2 seasons in total (12 episodes). The series concluded in 2026.

Are all episodes of The Undeclared War out yet?

Yes — all 12 episodes across 2 seasons of The Undeclared War are out and available to stream.

Is there a Season 3 of The Undeclared War?

No — The Undeclared War ended after 2 seasons, so there is no Season 3.