Slow Horses Season 6 Drops This September on Apple TV With Faster-Than-Expected Release

Apple TV has locked in the premiere date for Slow Horses season 6, and fans won't have to wait long.

The espionage drama will launch its new batch of episodes on September 16, 2026. The season comprises six episodes, with fresh installments arriving each Wednesday through October 21, 2026.

The upcoming season adapts Mick Herron's CWA Gold Dagger Award-winning novels Joe Country and Slough House. The storyline centers on MI5 director Diana Taverner, played by Kristin Scott Thomas, as she draws the Slow Horses into what the network describes as "a fatally high-stakes game of retaliation and revenge."

The show's premise revolves around British intelligence operatives banished to Slough House, a MI5 department for misfits and underperformers, where they're overseen by the cantankerous yet capable Jackson Lamb, portrayed by Academy Award winner Sir Gary Oldman.

The returning cast includes Jack Lowden, Saskia Reeves, Christopher Chung, Aimee-Ffion Edwards, Rosalind Eleazar, Joanna Scanlen, Samuel West, Ruth Bradley, Tom Brooke, Jonathan Bryce, and Hugo Weaving. BAFTA TV Award winner Lenny Rush has been added to the ensemble for season 6.

Apple TV has shared initial footage from the upcoming season. The darkly comic thriller returns exclusively to the platform on September 16.