Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
Slow Horses currently has 6 seasons and 36 episodes. Most episodes run for around 52 minutes, offering a comfortable mid-length viewing experience. The series is currently marked as "Returning Series". The most recently aired episode came out in 2025.
According to the latest schedule, the next confirmed release for Slow Horses is Season 6, Episode 1, titled "Circle of Life", which is set to air on September 16, 2026. That episode will open a brand new season, making it the official start of Season 6. Release times can differ slightly outside of United Kingdom and United States of America, so your local broadcaster or streaming app may list a slightly different premiere date or time. When the next release does arrive, it is expected to carry the same content rating of TV-MA (US), which can influence when it airs on different providers and platforms.
trailers
Watch the official trailers for Slow Horses
Watch the main official trailer for Slow Horses in one place. Most of these clips were released around March 2022, capturing the show at its peak marketing push. Use the carousel to sample the show's visual style, story hooks and production quality before you dive into full episodes.
Uploaded in March 2022
similar
TV Shows like Slow Horses
If you enjoy Slow Horses, you may also like The Night Agent, Bridgerton and The Agency. These recommendations share similar tone, themes, or genres, making them natural follow-ups once you finish this show, and can be streamed for free.
Slow Horses is available to stream on SuperFilmz. The series is primarily produced for audiences in United Kingdom and United States of America, so availability can vary by region. However, you can watch full episodes of Slow Horses for free on SuperFilmz, with ads.
They finally made the hit list. Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces. It blends crime, drama and mystery elements. The series reflects a distinct United Kingdom and United States of America style and perspective.
worth-watching
Is Slow Horses worth watching?
Slow Horses holds an average rating of 8.0/10 based on 948 or more viewer votes. It is currently trending, which suggests a lot of active interest from viewers. If you enjoy crime, drama and mystery stories, this series is a strong candidate for your watchlist.
8.0 / 10 (948 votes)
release-timeline
Release pattern and schedule for Slow Horses
Slow Horses has been releasing episodes between April 2022 and October 2025 across 6 seasons. So far there are 36 released episodes, giving you plenty of story to catch up on before the next drop. The gap between seasons has often been under a year (around 9 months on average), indicating a relatively fast turnaround between batches of episodes. The upcoming release currently points to September 2026 as the key month to watch for new content.
catchup
How to catch up before the next Slow Horses release?
Slow Horses currently spans 6 seasons and 36 episodes, making it a manageable rewatch before the next release. Most instalments run for around 52 minutes, so a full-season binge can fit into a few dedicated evenings or a single weekend. If you're returning to the show, the latest storyline leaves off at Season 5, Episode 6, so rewatching the final season or two can help refresh the details before the next release.
cast
Cast and creators of Slow Horses
The main cast includes Gary Oldman, Jack Lowden and Kristin Scott Thomas. Behind the scenes, it is shaped by showrunner Adam Randall, Gary Oldman and Julian Stevens.
Gary Oldman
as Jackson Lamb
Jack Lowden
as River Cartwright
Kristin Scott Thomas
as Diana Taverner
Hugo Weaving
as Frank Harkness
Saskia Reeves
as Catherine Standish
Christopher Chung
as Roddy Ho
Rosalind Eleazar
as Louisa Guy
Aimee-Ffion Edwards
as Shirley Dander
keywords
Slow Horses Keywords(11)
london, englandspybased on novel or booksecret agentterrorismbritish spybluntmacabremi5british intelligenceabsurd
Season 2
Season 3
Season 4
Season 5
Season 6
