how many seasons slow horses

The TV series "Slow Horses" has 5 seasons released as of now, with the 5th season having premiered on September 24, 2025. Additionally, seasons 6 and 7 have already been confirmed and are planned for the future. Each season adapts one of Mick Herron's Slough House novels. Seasons 1 to 4 have been released annually from 2022 to 2024, and the 5th season started in 2025.