Season 5
Slow Horses
6 EPISODES • 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 everything is connected. After all, Lamb knows that in the world of espionage, the London Rules — cover your back — always apply.

Season 4

Episodes

1: Bad Dates
Sep 24, 2025
A mass shooting rocks London, intensifying a testy mayoral race. Shirley believes one of the Slow Horses was the target of an attempted hit.
2: Incommunicado
Oct 1, 2025
Lamb intercepts an assassin. Taverner receives a key piece of intel about the Abbotsfield shooting.
3: Tall Tales
Today
An act of sabotage grinds London to a halt. Taverner interrogates Roddy. Coe is convinced a destabilization strategy is at play.
4: Missiles
Wednesday
5: Circus
14 Days
6: Scars
21 Days
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