Robert Carlyle Joins Line of Duty Series 7 as Detective Constable Shaun Massie

Scottish actor Robert Carlyle, known for his roles in Trainspotting and The Full Monty, has been cast as the guest lead in the upcoming seventh series of the BBC police procedural drama, Line of Duty. The announcement was made on February 19, 2026, by the BBC.

Character Details

Carlyle will portray Detective Constable Shaun Massie, a specialist rifle officer within the Tactical Operations Unit. DC Massie is described as a “gruff loner” tasked with tackling organized crime groups. The storyline will explore a shift in his demeanor when his commanding officer is accused of sexual predation. Source

Returning Cast and Production

The seventh series will notice the return of series leads Martin Compston, Vicky McClure and Adrian Dunbar. Filming is scheduled to begin in Belfast this spring, with the series expected to air in 2027. Source The series will follow the anti-corruption unit AC-12, now rebranded as the Inspectorate of Police Standards, as they investigate their most sensitive case to date. Source

Statements from Cast and Creator

Robert Carlyle expressed his enthusiasm for joining the cast, stating, “Having been a huge admirer of Jed Mercurio’s work for many years, I’m delighted to be given the opportunity to join such an exceptional cast for series seven of Line of Duty. The scripts for the series are excellent and will absolutely maintain the quality that the audience have come to expect from this fantastic show. DC Massie is an extraordinary character and I look forward to bringing him to life.” Source

Jed Mercurio, the creator of Line of Duty, added, “On Line of Duty we’ve been honoured by the glittering guest leads who’ve joined the cast over the years. We couldn’t be more thrilled that Robert Carlyle will star in series seven as Specialist Rifle Officer Shaun Massie. I’ve been a huge fan of Robert’s work for many years and it will be a career highlight to work with him. Robert always brings mesmerising power and depth to every role; I know viewers will be on the edge of their seats wondering what his character will do next, and why.” Source

Previous Guest Leads

Carlyle joins a distinguished list of actors who have previously taken on guest lead roles in Line of Duty, including Kelly Macdonald, Stephen Graham, Thandiwe Newton, Daniel Mays, Keeley Hawes, and Lennie James. Source