Slow Horses
MI5's most unruly spies are back and under attack.
Follow a dysfunctional team of MI5 agents, and their obnoxious boss, the notorious Jackson Lamb, as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
- Status
- Returning Series
- Original language
- EN
- Seasons
- 6
- Released
- April 1, 2022
Where to watch
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Availability data provided by JustWatch.
Top cast
Gary Oldman
Jackson Lamb
Jack Lowden
River Cartwright
Kristin Scott Thomas
Diana Taverner
Hugo Weaving
Frank Harkness
Saskia Reeves
Catherine Standish
Christopher Chung
Roddy Ho
Aimee-Ffion Edwards
Shirley Dander
Seasons
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Season 1
6 episodes, first aired 2022
When a young man is kidnapped and threatened with beheading, the slow horses find themselves unexpectedly embroiled in a dangerous case that forces them to prove their worth.
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Season 2
6 episodes, first aired 2022
Long-buried Cold War secrets emerge which threaten to bring carnage to the streets of London. When a liaison with Russian villains takes a fatal turn, our hapless heroes must overcome their individual failings and raise their spy game…
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Season 3
6 episodes, first aired 2023
A romantic liaison in Istanbul threatens to expose a buried MI5 secret in London. When Jackson Lamb and his team of misfits are dragged into the fight, they find themselves caught in a conspiracy that threatens the future…
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Season 4
6 episodes, first aired 2024
In season 4, a bombing detonates personal secrets, rocking Slough House's already unstable foundations.
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Season 5
6 episodes, first aired 2025
In season five, everyone is suspicious when resident tech nerd Roddy Ho has a glamorous new girlfriend. When a series of increasingly bizarre events occur across the city, it falls to the Slow Horses to work out how…
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Season 6
6 episodes, first aired 2026
In season six, the Slow Horses are on the run as Diana Taverner embroils them all in a fatally high-stakes game of retaliation and revenge.
