The eagerly awaited sixth season of the critically acclaimed series *Slow Horses* is set to premiere on 16 September on Apple TV+. This season follows the unusual British intelligence agents known as the Slow Horses, who find themselves in even graver peril than before. With a mixture of suspense and dark humour, the show captivates its audience once again.
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Adapted from Mick Herron’s renowned *Slough House* novels, the series features Gary Oldman in the lead role as Jackson Lamb, the surly but adept leader of the beleaguered group. Since its launch in 2022, *Slow Horses* has garnered an enthusiastic fan base and critical acclaim, winning several Emmy Awards for its engaging storytelling and impressive performances.
The sixth season promises to keep viewers on the edge of their seats. According to the official synopsis, the Slow Horses will soon find themselves embroiled in a dangerous game of vengeance led by Diana Taverner, portrayed by Kristin Scott Thomas. Oldman revealed in interviews that Lamb has a strong protective instinct for his team and will not stand by idly as they become targets. “He really takes the reins to try and get to the bottom of why it’s happening and who’s responsible,” commented the Oscar-winning actor, highlighting the character’s unwavering commitment to his team.
This new season is notable for adapting the sixth and seventh entries in Herron’s series: *Joe Country* and *Slough House*. Showrunner Gaby Chiappe explained the decision to combine these two novels, emphasising that it felt “right” for the unfolding narrative. Whilst keeping detailed plot points under wraps, she hinted at the inherent danger present throughout the season, indicating that “sometimes people die” in this gripping storyline.
Filming for Season 6 is directed by Adam Randall, who previously helmed Season 4. Oldman expressed satisfaction with the returning creative team, noting that the decision to bring back familiar faces fosters a cohesive vision for the series. Upon the announcement of Season 6, Apple TV+ confirmed an early renewal for a seventh season, set to adapt Herron’s 2022 release, *Bad Actors*. Furthermore, a subsequent renewal for an eighth season followed shortly after the show won three Emmy Awards in 2026.
The upcoming season will consist of six episodes. In addition to Oldman and Scott Thomas, the ensemble cast features a mix of familiar faces, including Jack Lowden, Saskia Reeves, and Jonathan Pryce. Notably, Olivia Cooke returns to reprise her role as Sidonie “Sid” Baker—an unexpected twist since her character was believed to have met her demise in Season 1.
Newcomer Lenny Rush joins the cast this season as Reece Nesmith, a character that presents an exciting new dynamic with Jackson Lamb. Chiappe highlighted the dynamic between the young character and Oldman’s portrayal, describing it as both refreshing and rewarding to witness.
Each episode of Season 6 will be released weekly, with the premiere set for 16 September. Subsequent episodes will follow on a regular Wednesday schedule throughout October. Historically, new episodes of *Slow Horses* have been made available at 3 a.m. ET (midnight PT), allowing for an early start for dedicated fans.
For viewers interested in catching up on the series, Seasons 1 through 5 of *Slow Horses* are already available on Apple TV+. With the mix of thrilling plotlines, exceptional character development, and star-studded performances, the sixth season promises to deliver yet another captivating experience for both new and returning audiences.