As per Deadline
Hugo Weaving, Joanna Scanlan, Ruth Bradley, Tom Brooke and James Callis have joined the star-studded cast of Slow Horses for its fourth season, which is currently being filmed in London. The show, which was recently nominated for five BAFTA TV Awards, follows the story of a bombing that detonates personal secrets and rocks the foundations of Slough House. Adam Randall is directing the season, which will feature the returning ensemble of Kristin Scott Thomas, Jack Lowden, Saskia Reeves, Rosalind Eleazar, Christopher Chung, Freddie Fox, Chris Reilly, Samuel West, Sophie Okonedo, Aimee-Ffion Edwards, Kadiff Kirwan, and Jonathan Pryce. Apple greenlit both seasons three and four before season two had even aired.
