Slow Horses Season 6 Countdown: Expected Release Date, Episode Count, and Key Updates

Season 5 of Slow Horses just crossed the finish line with Episode 6, which means the immediate question is obvious: when do we get Season 6, and what does it look like? Short version: it is happening, there is a rough idea of timing, and yes, it sounds like the stakes get messier.

Is Season 6 officially a go?

Yep. Apple renewed Slow Horses for a sixth season right after the Season 4 finale. So this was locked in before Season 5 even wrapped.

When could Season 6 actually drop?

The show has basically kept an annual rhythm since Season 2. If that holds, expect the next batch within the following year. The cautious read here: look for Season 6 by Q3 2026 at the latest. Not tomorrow, but not a multi-year drought either.

How many episodes, and where do we watch?

Apple has not announced an episode count yet. Based on how the show has rolled so far, plan on at least 6–7 episodes. It is an Apple TV+ original, so Season 6 will stream on Apple TV+ when it arrives. Gary Oldman is back as Jackson Lamb, because of course he is.

What is Season 6 adapting?

Per Deadline, the new season pulls from Mick Herron’s sixth and seventh Slough House novels: 'Joe Country' and 'Slough House'. Translation: more cold-blooded maneuvering from Diana Taverner and more of the Slough House misfits dragged into a knot of payback and fallout. Season 5 went over well with fans and kept ratcheting up the stakes; sounds like Season 6 is not dialing that down.

Quick hits

• Show: Slow Horses
• Current seasons: 5
• Creator: William James Smith
• Main cast: Gary Oldman, Jack Lowden, Kristin Scott Thomas, Saskia Reeves
• IMDb score: 8.3/10
• Rotten Tomatoes score: 97%
• Where to watch: Apple TV+ (US)

Season 6 is coming, the runway is clear, and the source material they are tackling is juicy. I am in. You?