Get ready for more MI5 misfits: Slow Horses is officially coming back for a sixth season on Apple TV, and it's arriving with a flawless critical record. The beloved spy thriller, starring Gary Oldman as the gruff Jackson Lamb, will premiere its new batch of episodes in September 2026, and early reviews are already glowing—boasting a perfect 100% score on Rotten Tomatoes.
The show's return is part of a jam-packed week for television, with Netflix's Monster: The Lizzie Borden Story and Paramount+'s MobLand also debuting new seasons around the same time. But Slow Horses stands out as the most anticipated, and for good reason. Since its debut in 2022, the series has been a consistent critical darling, earning acclaim for its sharp writing, dark humor, and stellar ensemble cast.
Season 6 brings back familiar faces, including Jack Lowden as the ambitious River Cartwright, Olivia Cooke (returning after a brief absence), Hugo Weaving, Jonathan Pryce, and Kristin Scott Thomas. The new season is being hailed as a major turning point for the series, with Collider's review noting that it "ultimately represents the biggest turning point for Apple TV's longest-running spy thriller."
The show's creator, Will Smith, stepped away after Season 5, but the transition hasn't hurt the quality—if anything, the early buzz suggests the series is hitting new heights. Slow Horses has already been renewed for a seventh season, ensuring that fans will have plenty more of Lamb's dysfunctional team to look forward to.
For those who haven't caught up, Slow Horses follows a group of disgraced MI5 agents who are relegated to Slough House, a dead-end department for those who've messed up on the job. Oldman's performance as the slovenly but brilliant Lamb has been widely praised, and the show has become a staple of Apple TV's lineup.
If you're in the mood for more spy action, you might also want to check out this classic submarine thriller that's been climbing the streaming charts or why Jack Lowden is the spy we need, not Bond. And for those who can't get enough of Oldman, he's addressed those Bond rumors in a recent interview.
With its blend of espionage, wit, and character-driven drama, Slow Horses continues to be one of the most compelling shows on television. Mark your calendars for September 2026—this is one return you won't want to miss.
