Apple TV+ has officially announced that Season 5 of its critically acclaimed British spy thriller Slow Horses will premiere globally on September 24, 2025. The new season kicks off with a two-episode debut, followed by a weekly release schedule, culminating in the season finale on October 22.
Adapted from the best-selling Slough House series by Mick Herron, Slow Horses follows a dysfunctional team of British intelligence agents who have been exiled to a department known as Slough House after career-ending mistakes. Despite being cast aside, these “slow horses” find themselves repeatedly caught up in complex espionage plots, often outmaneuvering the very agencies that discarded them.
Returning to lead the ensemble cast is Academy Award winner Gary Oldman, who reprises his role as the foul-mouthed, chain-smoking MI5 outcast Jackson Lamb. Starring alongside Oldman are Kristin Scott Thomas as the icy MI5 executive Diana Taverner, Jack Lowden as the ambitious but troubled River Cartwright, Saskia Reeves as Catherine Standish, Rosalind Eleazar as Louisa Guy, Christopher Chung as Roddy Ho, Aimée-Ffion Edwards as Shirley Dander, Ruth Bradley as Emma Flyte, James Callis, Tom Brooke, and Jonathan Pryce.
In a surprise addition, Season 5 will also feature Ted Lasso actor Nick Mohammed in a special guest appearance. Details about his role have not been disclosed, but the announcement has already sparked speculation among fans about how his comedic talents might be integrated into the gritty, tension-filled world of Slow Horses.
Since its debut, Slow Horses has been praised for its sharp writing, dark humor, and gripping storylines. The series has built a loyal international following and has been lauded for its faithful adaptation of Herron’s novels, which offer a satirical and unflinching look at modern intelligence work.
Season 5 is expected to continue the show’s tradition of blending tightly plotted suspense with character-driven drama, as the Slough House misfits once again find themselves in the middle of a conspiracy that only they can unravel.
Apple TV+ has not yet revealed the full plot of the upcoming season, but promotional teasers hint at new internal betrayals, escalating global tensions, and a deeper exploration of Lamb’s enigmatic past.
The streaming service has committed to an extended life for the series, with reports indicating that additional seasons are already in early development. For viewers, the return of Slow Horses promises another round of espionage, wit, and unpredictable twists — all led by one of Gary Oldman’s most memorable performances to date.
Season 5 of Slow Horses premieres globally on Apple TV+ on Tuesday, September 24, 2025.
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