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.comExtras include across episodes, credited with Extras Wrangler appearing in credits. Main cast return for multiple seasons, featuring Steve Arnott, Kate Fleming, Ted Hastings, and other major roles. Recent summaries highlight recurring guests in later seasons, plus detailed cast lists and character descriptions. Background crowd noted under Extras Wrangler in season entries. Line of Duty (2012-2026) cast also mirrors background and supporting credits across season arcs.