Apple TV+ has locked in September 16 as the return date for Slow Horses, confirming the sixth season of its critically acclaimed spy thriller while releasing a first image of BAFTA-winning newcomer Lenny Rush alongside the Slough House ensemble.
The six-episode season will drop weekly every Wednesday, wrapping on October 21. The announcement keeps the show on the reliable autumn schedule it has maintained since season four, cementing its status as one of Apple’s most consistent prestige offerings.
Season 6 marks the first time the series has drawn from more than one source novel, adapting both Joe Country and Slough House — the sixth and seventh books in Mick Herron’s Slough House series — in a single run. Combining the two gives screenwriter Gaby Chiappe substantially more narrative material and creates a bridge into season seven, which will adapt Bad Actors.
The season’s central crisis stems from a man who stole a top-secret file containing a list naming all the Slow Horses. With that man now dead, Lamb’s operatives find themselves hunted. The full ensemble returns — Gary Oldman as Jackson Lamb, Kristin Scott Thomas as MI5 chief Diana Taverner, Jack Lowden, Jonathan Pryce, Hugo Weaving, and Saskia Reeves among them.
Rush, best known for winning a BAFTA for the BBC comedy Am I Being Unreasonable?, joins the cast with his role undisclosed, though the first image places him alongside Christopher Chung’s Roddy Ho. Other new additions include Harry Lloyd, Kyle Soller, Lucian Msamati, and MyAnna Buring.
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The show’s forward momentum is striking. A Slow Horses spinoff, Down Cemetery Road, is also in development, and production on season seven is set to begin imminently, with the series now functioning as one of Apple TV+’s most reliably renewed properties — an unusual position for a low-key spy drama built around aging misfits and institutional cynicism rather than action spectacle.
