Slow Horses Season 5 Release Date: Gary Oldman Returns

Apple TV+’s critically acclaimed spy thriller Slow Horses returns with its fifth season on September 24, 2025, bringing back Gary Oldman as the sardonic MI5 section head Jackson Lamb. The first two episodes are released simultaneously on that date, with the remaining four episodes dropping weekly through October 22, 2025 .

Why It Matters Now

This season emerges almost exactly a year after Season 4 premiered in September 2024, maintaining the show’s consistent annual arrival . It continues the adaptation of Mick Herron’s bestselling Slough House novels—this one specifically based on London Rules, the fifth book in the series .

For fans and critics alike, the return of Oldman as Jackson Lamb is particularly notable. The character remains the linchpin of the ensemble, anchoring the series with a blend of biting humor and sharp espionage instincts .

What to Expect in Season 5

The new season shifts its narrative focus toward the tech-savvy agent Roddy Ho, played by Christopher Chung. His unexpected romantic involvement acts as a catalyst for a series of surreal and suspicious events unfolding across London. These bizarre incidents prompt the “Slow Horses” to investigate—and it’s clear that in the world of espionage, the “London Rules” of always watching your back still apply .

The ensemble cast largely returns, with Gary Oldman at the helm, joined by Kristin Scott Thomas (Diana Taverner), Jack Lowden (River Cartwright), Saskia Reeves, Rosalind Eleazar, James Callis, and Jonathan Pryce, among others. A noteworthy addition this season is Nick Mohammed (of Ted Lasso), who joins as a special guest star portraying an ambitious political figure .

Episode Release Schedule

Apple TV+ follows its usual pattern for the series:

• September 24, 2025: Episodes 1 and 2
• Weekly releases every Wednesday thereafter
• Final episode airs on October 22, 2025

Broadcast times align across U.S. time zones. New episodes become available at approximately 3 a.m. ET / midnight PT, early Wednesday .

Behind the Scenes & Series Outlook

Production for Season 5 wrapped by late 2024, with editing in progress shortly thereafter. Concurrently, Season 6 entered filming, reflecting the series’ accelerated production rhythm .

Authors of the show, particularly showrunner Will Smith, shaped this season’s lighter tone, steering away from the darker, more intense themes of Season 4. This creative turn seeks to balance suspense with a more satirical, even comedic approach—particularly through Roddy Ho’s storyline .

Season 5 is also notable as the final one under Smith’s leadership. Post-season, Gaby Chiappe will take over as head writer for Season 6, and Ben Vanstone will helm Season 7—reflecting the show’s evolving creative direction .

Meanwhile, author Mick Herron continues to expand the Slough House universe. Alongside Season 5’s release, his ninth novel Clown Town hits bookstores, and an adaptation of his debut Down Cemetery Road is underway with Emma Thompson attached .

What Viewers Are Watching

Viewers can note these highlights as Season 5 unfolds:

• The return of Gary Oldman’s Jackson Lamb, again anchoring the series
• The spotlight on Roddy Ho’s unexpected romantic subplot and resulting chaos
• The tight six-episode format—designed and directed as near six-hour-long films by Adam Randall
• Ongoing expansion of the spy narrative beyond traditional MI5 tropes, blending satirical edge with espionage thrills

In Summary

“Slow Horses” Season 5 arrives on September 24, 2025, delivering a fresh mix of intrigue and darkly comedic espionage. With its compelling cast, streamlined release pattern, and evolving creative team, the series continues to carve out a unique niche in the crowded streaming landscape.

Viewers should tune in for the first two episodes on premiere day, then catch a new installment every Wednesday thereafter. As Lamb and the Slow Horses navigate London’s underbelly and a strange new threat, the future of Slough House—and streaming espionage—remains enticingly unpredictable.