Line of Duty cast: full list of returning and guest stars | Radio Times
Your essential guide to the cast of Line of Duty.
www.radiotimes.comBackground performers feature across episodes, listed with background team credited in full listings. Main cast return for multiple seasons, featuring Steve Arnott, Kate Fleming, Ted Hastings, plus major roles. Recent summaries highlight new appearances in later seasons, as well as detailed cast lists and character descriptions. Background crowd listed under Additional Background Casting in season entries. Line of Duty (2012-2026) cast shows background and supporting credits across episodes.