Subtitles can be activated across various devices using the Official Apple TV Support Guide :
: An additional narration track that describes on-screen visual context for blind or low-vision viewers. How to Enable English Subtitles Slow Horses (2022) English subtitles
Change subtitles or languages for videos in the Apple TV app Subtitles can be activated across various devices using
: Standard dialogue-only text for viewers who want to follow the British accents or slang more closely. Slow Horses (2022) English subtitles
: Subtitles for the Deaf and Hard of Hearing that include relevant non-dialogue information, such as [telephone ringing] or [car approaching].