Returning Cast Members and Guest Stars for ‘Slow Horses’ Season 6 Confirmed

The critically acclaimed espionage series ‘Slow Horses’ continues to broaden its narrative of covert operations, political intrigue, and administrative exile. As the drama gears up for its sixth season, several notable actors are set to make their long-awaited returns, while new guest stars will challenge Jackson Lamb and his team of sidelined operatives.

With familiar faces returning after long absences, alongside dangerous assassins and key witnesses, this upcoming installment promises significant changes to the ensemble. Here’s a rundown of every confirmed returning cast member and guest star for season six of ‘Slow Horses’.

Olivia Cooke

Olivia Cooke reprises her role as Sidonie “Sid” Baker, a highly skilled MI5 operative first introduced in the debut season of ‘Slow Horses’. Despite her evident talent and potential, she was inexplicably assigned to Slough House alongside River Cartwright. The fate of her character remained uncertain after the dramatic events of the first season, leaving fans eager for her return in the sixth season of this acclaimed spy thriller.

Paul Higgins

Paul Higgins returns as Struan Loy, an administrative officer who was exiled to Slough House in the first season of ‘Slow Horses’. His career at Regent’s Park was derailed after sending an inappropriate email that violated intelligence protocols. As Slough House becomes embroiled in another high-stakes security crisis, Higgins’ character is set to face new challenges.

Harry Lloyd

Harry Lloyd joins the ensemble for season six as Damien Cantor, a powerful right-wing media mogul and owner of a major news channel. His character plays a crucial role in shaping public narratives and exerting political influence across London, adding a complex media dimension to the storyline that complicates British intelligence’s clandestine operations.

Kyle Soller

Kyle Soller appears in season six as Jim, a ruthless contract killer tasked with eliminating agents stationed at Slough House. His presence introduces severe danger for Jackson Lamb’s team, as they find themselves targeted in a coordinated manhunt. Soller’s character adds intense suspense to the storyline as he relentlessly pursues the vulnerable intelligence officers.

MyAnna Buring

MyAnna Buring joins the cast for season six as Jane, an assassin working alongside Jim. Jane is dispatched to carry out hits against the personnel at Slough House, forcing the discarded MI5 operatives to fight for their lives in hostile territory. Buring’s character raises the stakes of the season as the protagonists strive to uncover who sanctioned the contract against them.

Dylan Smith

Dylan Smith features in the sixth season portraying Andrew Nesmith, a former member of the Dogs, MI5’s internal security and tactical enforcement unit. Having gone rogue, he possesses critical stolen intelligence that poses a significant threat to national security, triggering a frantic pursuit that draws both Slough House and hostile external forces into a dangerous confrontation.

Lenny Rush

Lenny Rush joins the cast for season six as Reece Nesmith, the son of rogue former operative Andrew Nesmith. Caught in the crosshairs of the unfolding espionage conflict, Reece becomes a key child witness with knowledge of critical events, making him a person of interest to multiple competing intelligence factions. Rush portrays this pivotal young character whose safety is closely tied to the survival of the Slough House team.

Share your thoughts in the comments about which returning character or new guest star you are most excited to see in season six of ‘Slow Horses’.