‘Slow Horses’ is back for Season 6 — Here’s when and where to watch for free

It’s time to return to Slough House again as the sixth season of “Slow Horses” premieres on Apple TV tomorrow, Sept. 16.

The spy thriller series stars Sir Gary Oldman as Jackson Lamb, the head of Slough House. Slough House is a banishment assignment for MI5 service rejects who have messed up on the job quite badly, but not badly enough to get fired entirely.

Life in Slough House is defined by monotony and dull routine tasks, yet the “slow horses” (as they call themselves) somehow get involved in investigating cases that endanger Britain.

Season 6 “sees the Slow Horses on the run as Diana Taverner (Kristin Scott Thomas) embroils them all in a fatally high-stakes game of retaliation and revenge,” per Apple TV’s official synopsis. The new season also features “House of the Dragon” star Olivia Cooke reprising her Season 1 role as Sid Baker.

At yesterday’s Primetime Emmys, Saul Metzstein, who directed all of “Slow Horses” Season 6, won outstanding directing for a drama Series. It was also honored with nominations in eight other categories, including outstanding drama series, outstanding lead actor (for Oldman), outstanding supporting actor (Jack Lowden), outstanding writing and outstanding direction.

Here’s everything you need to know about “Slow Horses” Season 6 on Apple TV.

When is Season 6 of “Slow Horses” coming out?

“Slow Horses” Season 5 premieres Wednesday, Sept. 16 on Apple TV. One new episode will drop every Wednesday through Oct. 21.

Apple TV has not confirmed a release time, but the streamer will often release new episodes of original series the night before their listed premiere date. In the case of “Slow Horses,” you’ll likely be able to watch new episodes as early as 9:00 p.m. ET on Tuesday nights.

How to watch ‘Slow Horses’ for free:

“Slow Horses” continues to air exclusively on Apple TV, so you’ll need a subscription to watch the new series.

Apple TV offers a seven-day free trial for users, so you’ll be able to watch a few episodes (depending on when you subscribe) before the $14.99/month payments kick in.

Amazon Prime members can also subscribe to Apple TV directly through Prime Video. It costs the same $14.99/month price and also includes a seven-day free trial.

‘Slow Horses’ cast guide

• Sir Gary Oldman as Jackson Lamb
• Jack Lowden as River Cartwright
• Kristin Scott Thomas as Diana Taverner
• Saskia Reeves as Catherine Standish
• Christopher Chung as Roddy Ho
• Rosalind Eleazar as Louisa Guy
• Joanna Scanlan as Moira Tregorian
• Samuel West as Peter Judd MP
• Ruth Bradley as Emma Flyte
• Tom Brooke as J.K. Coe
• Jonathan Pryce as David Cartwright
• Hugo Weaving as Frank Harkness
• Lenny Rush as Reece Nesmith
• Harry Lloyd as Damien Cantor
• Kyle Soller as Jim
• MyAnna Buring as Jane
• Lucian Msamati
• Olivia Cooke as Sidonie “Sid” Baker
• ‘Slow Horses’ Season 6 episode guide

‘Slow Horses’ episode guide

“Slow Horses” Season 6 will have 6 episodes; check out the official Wednesday release dates for every episode below, but remember, they may be available to stream around 9:00 p.m. ET the night before the listed date.

• Episode 1: “Circle of Life” – Sept. 16
• Episode 2: “Daddy Issues” – Sept. 23
• Episode 3: “Resurrection” – Sept. 30
• Episode 4: “Lost and Found” – Oct. 7
• Episode 5: “Sayonara” – Oct. 14
• Episode 6: “Judgment Day” – Oct. 21

Was ‘Slow Horses’ renewed for Season 7?

Yes! In July 2025, “Slow Horses” was renewed for a seventh season, so you can expect at least one more season of “Slow Horses” once Season 6 wraps up. Apple TV also announced a Season 8 renewal yesterday, on the heels of another Emmy win.

Is ‘Slow Horses’ based on a book?

Yes! The series, as a whole, is based on Mick Herron’s Slough House series. Each season takes inspiration from a book in the series. Season 6 of “Slow Horses” is based on both the sixth novel, “Joe Country” and book seven, “Slough House.”

‘Slow Horses’ Season 6 trailer

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