History of Slow Horses in Timeline

Slow Horses, a British spy thriller based on Mick Herron's novels, centers on Slough House, an MI5 department for disgraced agents led by the cynical Jackson Lamb. The series follows their attempts to redeem themselves, often becoming entangled in dangerous and complex situations despite their perceived incompetence. The show features a talented cast including Jack Lowden and Kristin Scott Thomas, and explores themes of espionage, redemption, and the dark underbelly of intelligence agencies.

October 2019: Straight to series order by Apple TV+

In October 2019, Apple TV+ gave Slow Horses a straight to series order.

October 2019: Gary Oldman announced to star

In October 2019, along with the series order, Gary Oldman was announced to star in Slow Horses.

November 2020: Filming of the first series began

On 30 November 2020, filming of the first series of Slow Horses began in England.

December 2020: Cast rounded out

In December 2020, the cast of Slow Horses was rounded out with the additions of Olivia Cooke, Jonathan Pryce, Kristin Scott Thomas and Jack Lowden.

February 2021: Filming continued

In February 2021, filming of the first series of Slow Horses continued in England.

July 2021: Filming continued in Stroud

In July 2021, filming of the first series of Slow Horses continued in Stroud, Gloucestershire.

April 2022: Series premiered on Apple TV+

In April 2022, Slow Horses premiered on Apple TV+ and received highly positive reviews.

June 2022: Show renewed for third and fourth series

In June 2022, ahead of the second series premiere, Slow Horses was renewed for a third and fourth series, based on the novels Real Tigers and Spook Street.

March 2023: Filming completed for the third series

In March 2023, filming for the third series of Slow Horses had been completed and filming for the fourth series was about to begin.

January 2024: Programme renewed for fifth series

In January 2024, Slow Horses was renewed for a fifth series, which will be based on the fifth book, London Rules.

October 2024: Show renewed for sixth series

In October 2024, Slow Horses was renewed for a sixth series, which will be based on the sixth and seventh books, Joe Country and Slough House.

July 2025: Apple TV+ renewed for seventh series

In July 2025, ahead of the fifth series premiere, Apple TV+ renewed Slow Horses for a seventh series which is to be based on Bad Actors.

September 2025: Fifth series slated to premiere

In September 2025, the fifth series of Slow Horses is slated to premiere and is based on the novel London Rules.

September 2025: Fifth series scheduled to be released

On 24 September 2025, the fifth series of Slow Horses is scheduled to be released, with two new episodes, followed by a new episode on a weekly basis until the season finale on 22 October 2025.