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| Slow Horses Season 7: Release Date, Plot, Cast and What Happens After Season 6. |
Slow Horses Season 6 has finished, and the ending has inevitably left viewers asking the question Apple TV+ has already answered: yes, Season 7 is happening. The next chapter has been officially renewed, production has wrapped, and the series is expected to return in late 2027. So, unlike the usual streaming drama guessing game, there is no need to stare at ratings charts and interpret every suspicious social media post as a renewal announcement.
The sixth season pushed Jackson Lamb and the Slough House team into one of their most dangerous stories yet, mixing political manoeuvring, personal grudges and a steadily shrinking list of people who could reasonably expect to make it through the week. Now that Season 6 is complete, Season 7 will shift the story towards a deeply embedded threat inside the British Government, adapting Mick Herron's Bad Actors, the eighth novel in the Slough House series.
That change in direction should make Season 7 particularly interesting. Rather than simply repeating the survival-driven tension of Season 6, the new story is expected to bring the Slow Horses back into the murky world of institutional politics, where the biggest danger may not be someone carrying a weapon but someone sitting comfortably behind a desk with considerably more influence.
At the centre of the story will be Jackson Lamb and his team hunting a mole operating deep inside the British Government. The threat is serious enough to potentially destabilise the state, which sounds rather grand for a group of MI5 misfits who routinely struggle to keep their own office functioning. Still, that contrast is exactly what makes Slow Horses work. The stakes can be enormous while Lamb looks like he would rather be anywhere else.
Season 7 is expected to adapt Bad Actors, the eighth novel in Mick Herron's Slough House series. The book moves the franchise back towards political paranoia, intelligence manoeuvring and institutional distrust, giving the series plenty of room to continue its familiar combination of espionage, workplace dysfunction and very dry humour.
The expected story also means the new season could feel different from Season 6 without abandoning what made the previous episodes work. The sixth season leaned heavily into retaliation, grief and survival, while the seventh instalment should put greater emphasis on finding the mole and uncovering how deeply the threat has penetrated the government. Naturally, Lamb will probably approach the whole situation with the enthusiasm of someone being asked to attend an unnecessary meeting.
Apple TV+ has already confirmed Slow Horses Season 7, with production on the seven-episode season having wrapped. That makes the situation considerably clearer than the usual “maybe, depending on audience response” territory. The expected release window is late 2027, following the show's established pattern of returning with another season roughly a year after the previous instalment.
The returning cast is expected to include Gary Oldman as Jackson Lamb, Jack Lowden as River Cartwright and Kristin Scott Thomas as Diana Taverner, alongside Saskia Reeves as Catherine Standish, Rosalind Eleazar as Louisa Guy, Christopher Chung as Roddy Ho, Aimee-Ffion Edwards as Shirley Dander, Ruth Bradley as Emma Flyte and Tom Brooke as J.K. Coe. Exactly who remains standing after Season 6 is, of course, another matter entirely. Slow Horses has never been particularly sentimental about its characters' chances.
River Cartwright should remain an important part of the story, particularly after everything the character has been through across the series. His complicated family history has repeatedly dragged him into situations far beyond his job description, and Season 7 could give him another opportunity to prove that being assigned to Slough House does not necessarily mean being the least competent person in the room.
For Lamb, meanwhile, the central mystery should provide another excuse to demonstrate why his apparent laziness hides one of the sharpest minds in British intelligence. His methods remain questionable, his manners remain worse and his personal hygiene is still unlikely to win any government awards, but when something genuinely dangerous emerges, there are few people you would rather have working the problem.
Diana Taverner could also remain an important presence as the political side of the story develops. Her relationship with Lamb has always been one of the show's most entertaining power struggles, with both characters seemingly incapable of having a normal conversation when a perfectly good argument is available instead. Season 7's focus on government intrigue could give that rivalry plenty of fresh material.
The bigger question is whether Season 7 can follow the intensity of Season 6 without simply trying to make everything bigger, darker and louder. Thankfully, Slow Horses does not need to turn every season into an apocalypse to remain compelling. Its greatest strength is often the smaller human friction between people who are exceptionally good at their jobs but absolutely dreadful at getting along.
There is also plenty of scope for the supporting characters to steal scenes again. Roddy Ho's extraordinary confidence, Shirley Dander's unpredictable energy and Standish's patience with everyone around her have become essential ingredients of the series. Even when the main plot becomes complicated, these character dynamics keep the show from turning into a straight-faced spy thriller where everyone spends six hours looking concerned beside expensive computers.
My take is that Season 7 sounds like the right move for Slow Horses, particularly after the heavier tone of Season 6. The series has already proved that it can handle high-stakes espionage, but its real magic comes from throwing highly capable people into absurdly dysfunctional situations and watching them make everything considerably harder than it needs to be. Returning to political paranoia could restore some of the earlier seasons' balance between serious intelligence drama and wonderfully miserable workplace comedy.
The adaptation of Bad Actors is especially promising because it gives the writers plenty to explore without forcing the show to invent an entirely new direction. A government mole creates a naturally tense mystery, while Lamb and his team provide enough chaos to stop the story becoming too polished. Frankly, putting this particular group anywhere near a major national-security problem feels like a terrible idea, which is precisely why it should be fun to watch.
The late-2027 wait may feel long, but Slow Horses Season 7 is not a question mark anymore. The season has been renewed, production has already finished, and the story is expected to centre on the hunt for a mole at the heart of government. What remains uncertain is how closely the adaptation will follow Bad Actors, which characters will receive the most attention and whether Lamb will discover a way to complain about all of it before the opening credits finish.
For now, Season 6 has closed its chapter, while Season 7 is already waiting in the wings. And if you have an opinion on where the story should go next, do you think the mole storyline is the right direction, or would you rather see another kind of mission for Lamb and the Slow Horses? Tell us which character you most want back, what you expect from Season 7, and whether you think the series can somehow get even more chaotic without Lamb finally being ordered to take a shower.