The production of the sixth season of the critically acclaimed espionage drama Slow Horses reached a poignant milestone this week as lead actors Gary Oldman and Jack Lowden concluded their filming schedules in the heart of London. The wrap, marked by a visible display of camaraderie and mutual respect between the two stars, signals the completion of another chapter in the Apple TV+ flagship series, which has redefined the modern spy thriller. Observers on the set in Central London witnessed a departure from the icy, often antagonistic relationship shared by their on-screen counterparts, as Oldman and Lowden shared a long, emotional embrace following their final scenes together for the season.
The atmosphere on set was reportedly charged with emotion, a stark contrast to the gritty and cynical world of Slough House. Lowden, 36, appeared particularly moved, looking close to tears as the crew broke into a spontaneous round of applause to honor the duo’s contribution to the production. The final day of filming involved a high-octane police car chase featuring the iconic, albeit battered, yellow Honda driven by Oldman’s character, Jackson Lamb. The conclusion of the shoot marks the end of several months of intensive work across various London locations, solidifying the show’s reputation for using the city’s architectural dichotomy—from the gleaming glass of the City to the grime of back-alley safe houses—as a central character in its own right.
The Final Clapperboard: A Poignant Moment in Central London
The emotional farewell between Oldman and Lowden is significant not only for the actors personally but also for the fans who have followed the evolution of their characters over the past four years. In the series, Gary Oldman portrays Jackson Lamb, the brilliant but slovenly and frequently flatulent head of Slough House, a purgatory for MI5 agents who have botched their careers. Jack Lowden plays River Cartwright, an ambitious and talented young agent desperate to return to the agency’s headquarters at Regent’s Park. Their relationship is characterized by Lamb’s relentless verbal abuse and Cartwright’s begrudging respect for his mentor’s hidden genius.
The contrast between the actors’ real-life bond and their fictional friction was evident as they stepped out of character. While Lamb once famously told Cartwright that if he were held hostage, he would "buy [the kidnappers] a beer and a bullet," the reality on set was one of profound professional partnership. Oldman, 68, an Academy Award winner known for his transformative performances, has often spoken about the "shorthand" he has developed with Lowden, whom many critics view as the emotional anchor of the series.
The wrap of Season Six is particularly noteworthy given the show’s rapid production cycle and consistent critical success. Since its debut in 2022, Slow Horses has garnered multiple Emmy nominations and wins, praised for its sharp dialogue, intricate plotting, and subversion of the James Bond-style "super-spy" tropes. The show’s ability to maintain a high level of quality while producing seasons in relatively quick succession has made it a cornerstone of Apple TV+’s original programming strategy.
Expanding the Slough House Universe: Season Six and Beyond
Season Six, which is scheduled to premiere on September 16, 2026, is set to delve deeper into the high-stakes world of British intelligence. Based on the novels Joe Country and Slough House by Mick Herron—the sixth and seventh books in the series—the upcoming episodes will see the "Slow Horses" forced onto the run. The narrative arc involves Kristin Scott Thomas’s character, the formidable MI5 Deputy Director General Diana Taverner, embroiling the Slough House team in a dangerous game of retaliation and revenge that threatens the very existence of the unit.
The adaptation of Joe Country is expected to bring a shift in tone, as the source material is noted for being one of the more somber and high-stakes entries in Herron’s bibliography. It explores themes of legacy, the consequences of past sins, and the precarious nature of survival in the intelligence community. The production’s decision to combine elements of two novels suggests a fast-paced, dense season that will likely leave fans reeling ahead of the already commissioned seventh season.
The seventh season has been confirmed to be based on Herron’s eighth book, Bad Actors, ensuring that the world of Jackson Lamb will remain on screens for the foreseeable future. This long-term commitment from Apple TV+ reflects the show’s status as a global hit and its ability to attract top-tier talent both in front of and behind the camera.
Jack Lowden: A Rising Star Between Bond and Darcy
As Jack Lowden says a temporary goodbye to River Cartwright, his professional trajectory continues to skyrocket. The Scottish actor has become a fixture in "next James Bond" discussions, with bookmakers frequently placing him among the top contenders to succeed Daniel Craig. His performance in Slow Horses, which balances physical action with psychological depth, is often cited as a perfect audition for the role of 007.
However, Lowden’s immediate future involves another iconic British character. He is set to star as Mr. Darcy in a highly anticipated six-episode adaptation of Jane Austen’s Pride and Prejudice for Netflix. This prestige project features a powerhouse cast, including Olivia Colman as Mrs. Bennet, Rufus Sewell as Mr. Bennet, and Emma Corrin as Elizabeth Bennet. The role of Darcy will allow Lowden to showcase his range as a leading man in a period drama, further diversifying a resume that already includes acclaimed roles in Dunkirk and Fighting with My Family.
In his personal life, Lowden’s profile has also risen due to his marriage to four-time Oscar nominee Saoirse Ronan. The couple, who met on the set of Mary Queen of Scots, are considered one of the most talented power couples in the industry. Ronan has been a vocal supporter of Lowden’s work, recently praising his performance in the harrowing drama The Outrun, which the two co-produced.
Gary Oldman’s Definitive Late-Career Performance
For Gary Oldman, the role of Jackson Lamb has become a career-defining turn in his later years. Oldman has famously leaned into the character’s unkempt appearance, often appearing on screen with greasy hair, stained clothing, and a permanent cloud of cigarette smoke. His portrayal of Lamb—a man who has seen too much and cares too little for the niceties of bureaucracy—has earned him widespread acclaim and solidified his status as one of the greatest actors of his generation.
There has been persistent speculation that Oldman may view Jackson Lamb as his final major role. In several interviews, the actor has hinted at a desire to retire from the grueling schedules of film and television production, stating that he would be content to "go out" as Lamb. This possibility adds a layer of poignancy to the emotional scenes witnessed on set during the wrap of Season Six. If the series eventually concludes with Oldman’s retirement, Slow Horses will stand as a monumental final act to a career that includes such diverse roles as Sid Vicious, Count Dracula, Sirius Black, and Winston Churchill.
The Success of the Apple TV+ Espionage Strategy
The continued success of Slow Horses is a testament to Apple TV+’s strategy of investing in high-quality, British-led content with global appeal. By focusing on the "un-glamorous" side of spying—dealing with paperwork, internal politics, and the fallout of failure—the show has carved out a unique niche in a crowded marketplace. Unlike the high-tech gadgets and exotic locations of the Mission: Impossible or Bond franchises, Slow Horses finds its tension in the mundane and the messy.
The economic impact of the production on the UK film industry is also notable. The series employs hundreds of local crew members and utilizes a wide array of London-based businesses, from catering services to location scouts. Its commitment to filming on location in London, rather than on soundstages or in cheaper international hubs, provides an authentic grit that is essential to the show’s identity.
Anticipation for the September Premiere
As the production moves into the post-production phase, including editing, sound design, and scoring by Daniel Pemberton and Mick Jagger (who famously co-wrote the show’s theme song, "Strange Game"), anticipation among the fanbase is at an all-time high. The cliffhanger endings of previous seasons have left viewers eager to see how the team at Slough House will navigate the increasingly hostile environment of MI5.
The release of Season Six on September 16 will likely be accompanied by a significant promotional push. With the show’s stars reaching new heights of fame and the source material providing a rich well of stories, Slow Horses appears poised to remain a dominant force in the television landscape. For now, the emotional embrace between Oldman and Lowden serves as a reminder that while the world of Jackson Lamb is one of betrayal and cynicism, the bond between the creators of that world is built on a foundation of genuine affection and shared artistic achievement.

