Martin Compston plays DS Steve Arnott, Vicky McClure plays DC Kate Fleming and Adrian Dunbar plays Supt Ted Hastings.
Main cast
- DS/DI Steve ArnottMartin CompstonSeasons 1–6Main
- DC/DI Kate FlemingVicky McClureSeasons 1–6Main
- Supt Ted HastingsAdrian DunbarSeasons 1–6Main
- DI/DI Matthew "Dot" CottanCraig ParkinsonSeasons 1–3Main
- DC Ryan PilkingtonGregory PiperSeasons 1–6Main
- DCC/DSU Ian BuckellsNigel BoyleSeasons 1, 4, 6Main
- DI Lindsay DentonKeeley HawesSeasons 2–3Main
- PC/DS Maneet BindraMaya SondhiSeasons 3–5Main
- DS Sam RailstonAiysha HartSeasons 3–4Main
- DI Joanne DavidsonKelly MacdonaldSeasons 6Main
- DC Chloe BishopShalom Brune-FranklinSeasons 6Main
Supporting cast
- DCC Mike DrydenMark BonnarSeasons 2Supp
- CC Philip OsborneOwen TealeSeasons 1, 6Supp
- AC Derek HiltonPaul HigginsSeasons 1, 4Supp
- DCI Anthony "Tony" GatesLennie JamesSeasons 1Supp
- DCI Roz HuntleyThandiwe NewtonSeasons 4Supp
- DCI John CorbettStephen GrahamSeasons 5Supp
- DS Chris LomaxPerry FitzpatrickSeasons 6Supp
- DI Nicky RogersonChristina ChongSeasons 2Supp
- DCI Nicola RogersonChristina ChongSeasons 2Supp
- DC Nigel MortonNeil MorrisseySeasons 1–3Supp
Guest & voice
- DCI Arnott's former colleagueDaniel MaysSeasons 3Guest
- DS Daniel WaldronDaniel MaysSeasons 3Guest
- DS Georgia TrotmanJessica RaineSeasons 2Guest
- Gill BiggeloePolly WalkerSeasons 3–5Guest
- PC Farida JatriAnneika RoseSeasons 4–6Guest
- DS Lisa McQueenRochenda SandallSeasons 5Guest
- DCC Andrea WiseElizabeth RiderSeasons 5–6Guest
- PCC Rohan SindwhaniAce BhattiSeasons 5–6Guest
- DCI Jo Davidson's motherKirsty StrainSeasons 6Guest
- DS Farida JatriAnneika RoseSeasons 4–6Guest
- DC Deepak KapoorFaraz AyubSeasons 1Guest
- Jackie LavertyGina McKeeSeasons 1Guest
- Jools GatesKate AshfieldSeasons 1Guest
- Tommy HunterBrian McCardieSeasons 1–2Guest
- Tim IfieldJason WatkinsSeasons 4Guest
- DI Jodie TaylorClaudia JessieSeasons 4Guest
- DS Neil TwylerMark StobbartSeasons 4Guest
- Nick HuntleyLee InglebySeasons 4Guest
- Hana ReznikovaGaite JansenSeasons 4Guest
- Michael FarmerScott ReidSeasons 4Guest
- Jimmy LakewellPatrick BaladiSeasons 4Guest
- Miroslav MinkowiczTomi MaySeasons 1, 5Guest
- DSI/DSU/beyond listed rolesStephen GrahamSeasons 5Guest
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About this cast
Line of Duty is a BBC police corruption drama that aired from 2012 to 2021. The headline cast includes Martin Compston as DS Steve Arnott, Vicky McClure as DC Kate Fleming, Adrian Dunbar as Supt Ted Hastings, and Keeley Hawes as DI Lindsay Denton.
Cast FAQs
Who plays Steve Arnott in Line of Duty?
Martin Compston plays DS/DI Steve Arnott.
Who plays Ted Hastings in Line of Duty?
Adrian Dunbar plays Supt Ted Hastings.
How many cast members are in Line of Duty?
There are 44 cast members across all six seasons.
Sources: IMDb · IMDb · Line of Duty Wiki (Fandom) · Radio Times · Netflix · Updated June 2026