
The Undeclared War The battle line is online
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.
- Created By
Peter Kosminsky
- First Aired on
Jun 30, 2022
- Popularity: 3.9835
- 60 votes
- Networks
- (GB)
- Production
Playground Entertainment (US)Universal International Studios (GB)Stonehenge Films (GB)
- Status: Returning Series
In Production
1 seaons till Aug 04, 2022
Last episode: Episode 6
Seasons & episodes
Total 1 seasons, 6 episodes

Season 1
Aired
Episode 1Episode 147 min
A young intern's first day at GCHQ coincides with a major cyberattack on the UK. To win her superiors' trust, she breaks ranks to analyse the malware code without permission and uncovers a greater threat missed by others.
Episode 2Episode 247 min
Saara befriends John, a veteran GCHQ staffer, and seeks help from Gabriel in decrypting a message in the virus. Danny signs off on Saara attending a cyber conference with US agent Kathy, aware that Russian intelligence will also be there.
Episode 3Episode 356 min
Vadim returns to Russia where his allegiances are tested, leading him to a risky stunt.
Episode 4Episode 447 min
With Saara in a difficult position, a revelation forces her hand. Marina moves to London.
Episode 5Episode 547 min
Signs of irregularity in the UK general election result prompt political unrest, and the nation's relationship with its allies is threatened. Saara makes a devastating discovery.