🐎Slow Horses Season 5: Recap, Cast, Trailer, Release Date & What’s Next – MI5’s Outcasts Return for Another Twisted Game of Spies and Survival

The dysfunctional spies of Slough House are back. With its biting wit, tense espionage thrills, and unforgettable characters, Slow Horses has become one of the most acclaimed spy dramas of the decade. Now, Apple TV+ has dropped the official trailer for Season 5, which premieres September 24, 2025.

Based on London Rules, the fifth novel in Mick Herron’s award-winning Slough House series, this new chapter promises a mix of chaos, conspiracies, and sharp British humor — all under the watchful (and insulting) eye of Jackson Lamb.

Before diving into what’s coming, let’s take a quick look back at how we got here.

📖 Recap of Seasons 1–4

• Season 1 (2022) — Based on Slow Horses. A training disaster lands River Cartwright in Slough House, where he joins other MI5 rejects under Jackson Lamb’s command. What begins as punishment turns into a mission to stop a far-right plot involving a kidnapped student.

  
  

• Season 2 (2022) — Based on Dead Lions. The death of a Cold War spy leads the team into a deadly game with Russian sleeper agents. This season cemented the series’ reputation for high-stakes espionage mixed with bleak comedy.

  
  

• Season 3 (2023) — Based on Real Tigers. A kidnapping spirals into a conspiracy that pits Slough House against private security firms, rogue MI5 operatives, and political power games. The season earned critical acclaim, including nine Emmy nominations.

  
  

• Season 4 (2024) — Based on Spook Street. River’s family history comes to the forefront as dangerous secrets emerge from the past, intertwining personal betrayal with national security threats. It received five Emmy nominations, including Outstanding Drama Series.

Through these four seasons, Gary Oldman’s Jackson Lamb has become one of television’s most memorable anti-heroes — a chain-smoking, blunt, and often grotesque leader hiding razor-sharp instincts beneath his shabby exterior.

🎬 What’s New in Season 5?

Season 5 adapts London Rules, and this time, the trouble begins close to home. Everyone at Slough House is suspicious when tech genius Roddy Ho suddenly shows up with a glamorous girlfriend. But when bizarre events ripple across London, Lamb’s ragtag team must connect the dots before the city unravels.

The stakes rise as the London Rules come into play: cover your back at all times.

Expect the season to be packed with misdirection, double-crosses, and Lamb’s signature put-downs — all while the Slow Horses once again stumble into saving Britain.

⭐ Cast & New Faces

The returning ensemble includes:

• Gary Oldman as Jackson Lamb

• Jack Lowden as River Cartwright

• Kristin Scott Thomas as Diana Taverner

• Saskia Reeves as Catherine Standish

• Rosalind Eleazar as Louisa Guy

• Christopher Chung as Roddy Ho

• Aimee-Ffion Edwards, Ruth Bradley, and Jonathan Pryce

New this season is Nick Mohammed (Ted Lasso), joining as a special guest star — his role is tightly under wraps, but his comedic sharpness is bound to fit right in with the show’s dry wit.

📺 Release Schedule

• Premiere Date: September 24, 2025

• Episodes: 6 total

• Release Pattern: First episode drops on premiere day, followed by one episode weekly until October 29, 2025

• Streaming Platform: Exclusively on Apple TV+

🔥 Why Fans Are Excited

Critics have hailed Slow Horses as “the best spy series on television,” thanks to its combination of suspense, dark humor, and layered storytelling. With Seasons 6 and 7 already confirmed, fans can rest assured that Slough House’s chaos is far from over.

🎯 Final Thoughts

Season 5 of Slow Horses isn’t just another entry in a hit series — it’s proof that the espionage genre can still feel fresh, funny, and emotionally sharp. With Gary Oldman leading one of TV’s best casts, the London Rules are about to be tested like never before.

Mark your calendars for September 24, 2025. The spies of Slough House may be rejects, but when it comes to saving Britain, they’re the only team that can get the job done… however messy the process might be.