Fans of Slow Horses, one of the best Apple TV+ original series, will be happy to hear that the popular spy series about a ragtag group of misfits in the United Kingdom’s intelligence community is coming back for a fifth season. No need for any security clearances, flash boxes, or hidden microphones, because I’ve gotten hold of quite a bit of information about one of the best spy shows in recent memory.
And while it is true that it feels like it was just yesterday that we last visited Slough House, I’ve got a whole dossier of information on the show’s premiere date, cast, and its future that longtime fans and new recruits will love. That said, come along as I break down everything we know about Slow Horses Season 5, which will be available with an Apple TV+ subscription very, very soon.
What Is The Slow Horses Season 5 Premiere Date?
So, when is the Slow Horses Season 5 premiere date? Well, Apple TV+ has announced that the show will debut well before the end of the 2025 TV schedule when it pops up on the streaming service on September 24, 2025. This continues a trend of having new episodes drop in the fall months each year of release since Season 2. It should be noted that the series debuted in April 2022, the first and only spring premiere.
How Many Episodes Will There Be In Slow Horses Season 5?
As has been the case since the very beginning, Slow Horses Season 5 will consist of six episodes, Apple TV+ has announced. However, it hasn’t been revealed if the show
The Slow Horses Season 5 Cast
When Slow Horses returns this fall, it will see the return of the major players we’ve all come to know and love (and hate) over the past couple of years. Here’s everyone Apple TV+ has announced so far.
Gary Oldman as Jackson Lamb
Gary Oldman will be back as Jackson Lamb, the rude yet loyal leader and chronic farter of Slough House.
Kristin Scott Thomas as Diana Taverner
Kristin Scott Thomas has played Diana Taverner since the beginning, and she’ll once again be back as the MI5 Deputy Director-General when Slow Horses returns.
Jack Lowden as River Cartwright
Jack Lowden’s River Cartwright has been one of the best characters on the show since the beginning, and that won’t end anytime soon, as he’ll be back again when Slow Horses returns.
Saskia Reeves as Catherine Standish
Catherine Standish, played by Saskia Reeves, has been a staple of Slough House since the very first episode. That’ll continue to be the case when Season 5 premieres.
Rosalind Eleazar as Louisa Guy
Louisa Guy, played by Rosalind Eleazar, has been a part of the show’s biggest moments from day one. The spy seeking redemption will potentially add a few more when she returns to the fold.
Christopher Chung as Roddy Ho
With Slow Horses Season 5 putting a heavy focus on Roddy Ho, it’s no surprise that Christopher Chung is back as the Slough House hacker.
Tom Brooke as J.K. Coe
The newest member of Slough House, J.K. Coe will once again be portrayed by Tom Brooke in the upcoming season of Slow Horses.
Jonathan Pryce as David Cartwright
Jonathan Pryce has been a tour de force as David Cartwright since the early days of Slow Horses, so it’ll be exciting to see how his story continues when the show returns.
Hugo Weaving as Frank Harkness
Hugo Weaving joined the fray in Slow Horses Season 4 when he took on the role of Frank Harkness, the mercenary with a connection to River. That story will continue in the show’s next chapter.
Nick Mohammed
Slow Horses Season 5 will also see a new addition to the cast, as Apple TV+ has announced that Nick Mohammed, the star of the streamer’s Ted Lasso, has signed on in an undisclosed role. Oh, the mystery.
What Is Slow Horses Season 5 About?
When Apple TV+ first announced Slow Horses Season 5 back in January 2024, the streamer teased what’s to come in the next stage of Slough House's gritty espionage story. The upcoming season will center around Roddy Ho and his new glamorous girlfriend, who raises the suspicions of everyone in the group. But when bizarre events start going down all around London, the team has to figure out how it’s all connected and what it all means.
Season 5 Is Based on Mick Herron’s London Rules Novel
Like the first four seasons in the show, the upcoming book-to-screen adaptation draws from Mick Herron’s Slough House series of novels, specifically the fifth entry, London Rules. Those familiar with the show know all too well what “London Rules” means.
The Slow Horses Season 5 Teaser
Though Apple TV+ has yet to release a full trailer for the Slow Horses Season 5, a brief teaser has been released. In the 36-second clip, Jackson Lamb and Roddy Ho stand in silence in the elevator of a skyscraper as it ascends to the top of the building. Surely, it’s building towards something…
But this wasn’t the first teaser Apple TV+ released. As is the case with every season of Slow Horses, the latest finale gave us a taste of what’s to come when the show returns in September. This 47-second teaser, which is only available at the tail end of the Season 4 finale, does a great job of making fans of the show excited. With gunfire, espionage, and yet another plot that’ll see Slough House risking life and limb for king and country, it looks like we’re about to start another great adventure into the world of espionage.
A Sixth Season Of Slow Horses Is Already In The Can, A Seventh Starts Production In Fall 2025
Remember back in October 2024 when Apple TV+ announced that Slow Horses Season 6 had been picked up? Well, I’ve got some good news for you, as the streamer announced in June 2025 that the season has already wrapped filming (I guess this means we’ll get a teaser at the end of the show’s fifth season). This time around, two of Mick Herron’s books – Joe Country and Slough House – will be getting the adaptation treatment, but the episode count will remain at six.
But that isn’t all, as Apple has already announced that production on the show’s seventh season will pick up at some point this fall. Talk about getting ahead of the curve with this one.
Slow Horses Books In Order
If you want to catch up on Mick Herron’s Slough House novels before the latest adaptation of his spy books premieres on one of the best streaming services, here’s a full breakdown of the series in order.
Number | Title | First Published |
|---|---|---|
1 | Slow Horses | 2010 |
2 | Dead Lions | 2013 |
3 | Real Tigers | 2016 |
4 | Spook Street | 2017 |
5 | London Rules | 2018 |
6 | Joe Country | 2019 |
7 | Slough House | 2021 |
8 | Bad Actors | 2022 |
9 | Clown Town | 2025 |
How To Watch Slow Horses Seasons 1 - 4
If you want to revisit all the previous chapters before Slow Horses Season 5 premieres or watch the show for the first time, you’re in luck because the entire series is streaming on Apple TV+. All you have to do is check out the link below, select your season of choice, and start binge-watching your way through this unforgettable spy saga.
Stream Slow Horses on Apple TV+.
Though there are only a few months until Slow Horses Season 5 premieres, expect to hear much more about its return. But in the meantime, it’s not a bad idea to check out all the other upcoming Apple TV+ series coming our way
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