Line of Duty cast: Full list of returning and guest stars
Your essential guide to the cast of Line of Duty.
It's official: Line of Duty season 7 is confirmed and on its way, with the cast already emerging for the highly anticipated return of AC-12.
Every year, the series introduces a new big-name guest star to act (usually) as an antagonist to Steve, Kate and Ted, and this year, that's been confirmed as none other than Robert Carlyle as Detective Constable Shaun Massie.
So far, details of the plot are being kept under tight wraps, but with other names already confirmed for season 7, there's enough to get excited about.
Read on for the Line of Duty cast, including the names for the latest season and all previous ones, too.
Last updated: 31 March 2026
Full Line of Duty returning cast list
- Martin Compston – DI Steve Arnott
- Vicky McClure – DI Kate Fleming
- Adrian Dunbar – Superintendent Ted Hastings
- Mark Bonnar – Former Deputy Chief Constable Mike Dryden
- Owen Teale – Chief Constable Philip Osborne
- Perry Fitzpatrick – DS Chris Lomax
- Christina Chong – DI Nicky Rogerson
Martin Compston as DI Steve Arnott
About the character: Steve Arnott is a dedicated anti-corruption officer, formerly with anti-terrorism, who transferred to AC-12 after refusing to cover up a botched operation. Throughout the series, Arnott has become known for his sharp instincts, unwavering sense of justice, and trademark waistcoats. In recent seasons, his struggles with a back injury and painkiller addiction have added further complexity to his character.
Where you’ve seen Martin Compston before: The Nest, Traces, Vigil.
Vicky McClure as DI Kate Fleming
About the character: Kate Fleming is an undercover specialist and a key member of the anti-corruption team. Renowned for her investigative skills and professionalism, Fleming’s personal life has often come second to her devotion to the job. Her dynamic with Arnott and Hastings forms the heart of the series.
Where you’ve seen Vicky McClure before: This Is England, Broadchurch, Trigger Point.
Adrian Dunbar as Superintendent Ted Hastings
About the character: Ted Hastings is the senior investigating officer at AC-12. Known for his strong moral code and memorable catchphrases, Hastings has faced his own battles, including coming under suspicion and being forced into retirement. His leadership and loyalty to his team remain central to the show.
Where you’ve seen Adrian Dunbar before: Ridley, Blood, Ashes to Ashes.
Mark Bonnar as Former Deputy Chief Constable Mike Dryden
About the character: Mike Dryden is a senior police official whose involvement in corruption cases has made him a recurring figure in the series.
Where you’ve seen Mark Bonnar before: Celebrity Traitors, Guilt, Shetland, Unforgotten.
Owen Teale as Chief Constable Philip Osborne
About the character: Philip Osborne is the Chief Constable of Central Police, a figure often at the centre of institutional controversy and cover-ups. His presence looms large over the anti-corruption efforts.
Where you’ve seen Owen Teale before: Game of Thrones, A Discovery of Witches, Ballykissangel.
Perry Fitzpatrick as DS Chris Lomax
About the character: Chris Lomax is a detective sergeant previously involved in the Gail Vella murder investigation. He has been a supporting character in the later seasons.
Where you’ve seen Perry Fitzpatrick before: This Is England, Man Like Mobeen, Downton Abbey.
Christina Chong as DI Nicky Rogerson
About the character: Nicky Rogerson is a detective inspector who first appeared as a detective sergeant in earlier seasons, developing a professional and personal connection with Steve Arnott.
Where you’ve seen Christina Chong before: Bulletproof, Doctor Who, Black Mirror.
Line of Duty season 7 cast list
- Robert Carlyle – Detective Constable Shaun Massie
- Tom Weston-Jones – Detective Inspector Dominic Gough
- Laura Aikman – DC Paula Beckman
- Levi Brown – DC Luke Tobin
- Amy Leigh Hickman – DC Nira Rashid
- David Calder – TBC
- Steven Elder – TBC
- Dominic Mafham – TBC
- Sarah Andre White – TBC
- Aimee Powell – TBC
- Naomi Yang – TBC
Robert Carlyle as Detective Constable Shaun Massie
About the character: Shaun Massie is a Specialist Rifle Officer and veteran marksman, operating with Tactical Operations Unit 7 (TO-7) to take down Organised Crime Groups. Described as a gruff loner who keeps himself to himself, Massie’s demeanour shifts dramatically when his boss, DI Dominic Gough, is accused of being a sexual predator.
Where you’ve seen Robert Carlyle before: Trainspotting, The Full Monty, 28 Weeks Later.
Tom Weston-Jones as Detective Inspector Dominic Gough
About the character Dominic Gough is the commanding officer of TO-7, celebrated for a string of successful operations against organised crime. In season 7, he becomes the subject of a major investigation after being accused of abusing his position of trust to act as a sexual predator – a case that may be a smokescreen for a larger threat.
Where you’ve seen Tom Weston-Jones before: Sanditon, Warrior, Shadow & Bone.
Laura Aikman as DC Paula Beckman
About the character: TBC
Where you’ve seen Laura Aikman before: Gavin & Stacey, Joan, This City Is Ours.
Levi Brown as DC Luke Tobin
About the character: TBC
Where you’ve seen Levi Brown before: This Town, Silent Witness, Girl Taken.
Amy Leigh Hickman as DC Nira Rashid
About the character: TBC
Where you’ve seen Amy Leigh Hickman before: You, Ackley Bridge, Safe, Our Girl.
David Calder as TBC
About the character: TBC
Where you’ve seen David Calder before: Rivals, Motherland, The World is Not Enough.
Steven Elder as TBC
About the character: TBC
Where you’ve seen Steven Elder before: Toxic Town, The Winter King, The King, Apple Tree Yard.
Dominic Mafham as TBC
About the character: TBC
Where you’ve seen Dominic Mafham before: Vigil, The Marlow Murder Club, Industry, Little Disasters.
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Sarah Andre White as TBC
About the character: TBC
Where you’ve seen Sarah Andre White before: What It Feels Like for a Girl, New Tricks, Code of a Killer.
Aimee Powell as TBC
About the character: TBC
Where you’ve seen Aimee Powell before: Believe Me.
Naomi Yang as TBC
About the character: TBC
Where you’ve seen Naomi Yang before: Under Salt Marsh.
Previous Line of Duty cast:
Season 6
Kelly Macdonald – DCI Joanne Davidson
About the character: Joanne Davidson was the senior investigating officer in the unsolved murder of journalist Gail Vella. Her unconventional conduct and complex family history placed her at the centre of AC-12’s investigation.
Where you’ve seen Kelly Macdonald before: Trainspotting, Boardwalk Empire, The Victim.
Shalom Brune-Franklin – DC Chloe Bishop
About the character: Chloe Bishop was introduced as a new member of the AC-12 anti-corruption unit, assisting in the investigation of institutional corruption.
Where you’ve seen Shalom Brune-Franklin before: Roadkill, Our Girl, Doctor Who.
Anna Maxwell Martin – DCS Patricia Carmichael
About the character: Patricia Carmichael is a senior anti-corruption detective, often brought in to interrogate or oversee investigations within AC-12.
Where you’ve seen Anna Maxwell Martin before: Motherland, The Bletchley Circle, Good Omens.
Nigel Boyle – DSU Ian Buckells
About the character: Ian Buckells, a recurring figure since season 1, was ultimately revealed as “H”, the so-called “Fourth Man” at the heart of the corruption case.
Where you’ve seen Nigel Boyle before: Small Axe, The End of the F***ing World, Peaky Blinders.
Tommy Jessop – Terry Boyle
About the character: Terry Boyle is a vulnerable man exploited by criminal elements, whose story highlights systemic failures in police protection.
Where you’ve seen Tommy Jessop before: Coming Down the Mountain, Off Their Rockers.
Main Line of Duty cast 1–5
- Stephen Graham – John Corbett (season 5)
- Thandiwe Newton – DCI Roz Huntley (season 4)
- Keeley Hawes – DI Lindsay Denton (seasons 2–3)
- Lennie James – DCI Antony Gates (season 1)
- Craig Parkinson – DI Matthew “Dot” Cottan (seasons 1–3)
- Jason Watkins – Tim Ifield (season 4)
- Mark Bonnar – DCC Mike Dryden (season 2, see above)
Line of Duty seasons 1-6 are available to stream on BBC iPlayer.
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Authors
Helen Daly is the Deputy Digital Editor for Radio Times, overseeing new initiatives and commercial projects for the brand. She was previously Deputy TV Editor at a national publication. She has a BA in English Literature and an MA in Media & Journalism from Newcastle University.
