Slow Horses Meets Homeland In Peacock’s 12-Part Series Tearing Up Streaming

Published Sep 2, 2026, 12:32 PM EDT Nick Bythrow is a Lead Writer for ScreenRant. He has been writing for the site since September 2022. He graduated from Hampshire College in 2022, where he triple majored in Journalism, Communications, and Media Studies. When he's not writing about TV and movies for ScreenRant and his blog, Frayed Branches, Nick is penning speculative fiction and poetry on Amazon. He lives outside Boston, Massachusetts. Slow Horses meets Homeland in a new, 12-episode TV series from Peacock that's tearing up streaming nearly a week after it arrived on the platform. Peacock is home to a number of series across a wide array of genres, with core original programming that spans across a wide array of genres. From comedies like Ted to dramas like The Five-Star Weekend, the streaming platform has produced many popular shows that offer an array of stories for audiences. It has even more new series arriving all the time, including the upcoming Crystal Lake, a prequel to Friday the 13th. But Peacock is also involved in a number of co-productions, such as The Day of the Jackal, which it produces alongside Sky Atlantic in the United Kingdom. Another co-production in the UK is The Undeclared War, which was created for both Peacock and Channel 4. Billed as a cyber thriller, The Undeclared War's story showcases the fallout from a cyberattack on the UK's Internet, leading to an investigation that spans the world. Season 1 was released in 2022, while season 2 arrived on Peacock on August 27, 2026. The Undeclared War Returns As A Streaming Hit On Peacock Image via Peacock The Undeclared War season 2 dropped all at once on Peacock, with all six episodes joining the previous six from season 1. Within days, the series became a massive hit for the platform, becoming the Number 5 TV show in the United States by September 1, 2026. However, as of writing, the show is no longer in the Top 10 on the platform. However, it maintained a spot for the first few days after season 2's release, with Number 2 as its highest spot. With the show being so new, it could easily resurface in the coming days and weeks. The series stars Hannah Khalique-Brown as Saara Parvin, a computer science student whose experiences are central to the story. She stars opposite Simon Pegg, who plays Danny Patrick, the Head of Operations at GCHQ with a mindset just as important for unraveling the mystery. The Undeclared War season 2 sees the pair back with another mystery to solve, with the cybersecurity of the UK in crisis. And, given their work, these security threats lead to tangible, real-world consequences. The Espionage Thriller Is Perfect For Slow Horses & Homeland Fans Image via Peacock Shows like The Undeclared War include Slow Horses and Homeland, with which the series shares many similarities. All three shows focus on central characters acting as the leaders of their respective teams, alongside trusted members who aid them in the investigations that play out. The show does a good job at balancing character and mystery, with the consequences of said mystery having far-flung effects if the team can't resolve things quickly. Much like Slow Horses in particular, seasons of The Undeclared War are short, with only six episodes for both of them. The only difference it holds is a lengthy wait between new episodes, with season 2 coming out four years after season 1 ended. Still, its focus on outside threats offers a bit of Homeland to its presentation, making it feel like a strong addition to both shows, delivering a unique approach to espionage stories in the process. Release Date 2022 - 2026-00-00 Network Channel 4 Directors Peter Kosminsky, Paul McGuigan Writers Declan Lawn, Amelia Spencer, Colin Teevan, Adam Patterson Cast Simon Pegg, Hannah Khalique-Brown, German Segal, Maisie Richardson-Sellers, Edward Holcroft, Adrian Lester, Tom McKay, Joss Porter, Alex Reid, Daniel O'Meara, David Prosho, Kerry Godliman, Mark Rylance, Martin Trenaman, Eduard Flerov, Florence Bell, Isaura Barbé-Brown, Yanina Hope, Sukh Ojla, Anna Cannings, Ernest Gromov, Brendan Purcell, Alex Jennings, Hattie Morahan, Ed Stoppard, Julie Barclay, Bharti Patel