Alison O'Donnell Departs BBC's Shetland After 13 Years; Series 11 Features Tosh's Final Story

Alison O’Donnell debuted Tosh in 2013 as part of the show’s first TV adaptation of Ann Cleeves’ award-winning crime novels.
In the character’s backstory, “Tosh” is the nickname for Det Sgt Alison McIntosh—who worked with Det Insp Jimmy Perez before her promotion to DI after Douglas Henshall’s 2022 exit.
There were earlier indications she might leave soon: she told Radio Times she would “hate to… overstay my welcome” and said she would keep “one eye on” whether it was time to quit.
BBC Drama executive producer Gaynor Holmes said O’Donnell is a “pleasure to work with,” adding that “Her warmth shines through on screen,” and that BBC will ensure Tosh gets “the fitting farewell she deserves.”
The 11th series return was framed as bittersweet, with O’Donnell described as the programme’s joint-longest-serving cast member alongside Steven Robertson (DC Sandy Wilson).
Alison O'Donnell is leaving BBC crime drama Shetland after 13 years, the broadcaster confirmed. Her final appearance as DI Alison "Tosh" McIntosh will come in Series 11, a six-part run currently filming in Scotland BBC Press Release.
O'Donnell has been part of the show since its very first episode in 2013. She called the role "the greatest gift an actor could receive" but said she is ready to explore new opportunities The National.
O'Donnell debuted as Detective Sergeant Alison McIntosh — nicknamed Tosh — in the pilot episode "Red Bones" on March 10, 2013 GB News. She served as a junior foil to Douglas Henshall's DI Jimmy Perez for nine years. When Henshall left in 2022, Tosh was promoted to Detective Inspector within the story.
Rather than making Tosh the new lead, the BBC brought in Ashley Jensen as DI Ruth Calder for Series 8 Hello Magazine. O'Donnell stayed on as a co-lead. That gave her continuity role a quiet importance: she was the bridge between the old show and the new one. By the end of Series 11, she will have appeared in roughly 60 episodes.
Series 11 will give Tosh a full send-off built around a single case. The plot centres on an historic murder that reshapes the lives of people connected to it in the present Yahoo Style. The BBC says filming is under way in Scotland now.
O'Donnell said playing Tosh has been "a formative, rewarding experience." She credited the writing, the character's growth, and the loyalty of the audience. BBC Drama executive producer Gaynor Holmes said O'Donnell is "a pleasure to work with" and promised "the fitting farewell she deserves" Head Topics.
Her exit was not a total surprise. During press for Series 8, O'Donnell told the Radio Times she would "hate to overstay my welcome." She said she would keep "one eye on" whether the time had come to quit The National. Those comments now read as an early farewell signal.
She is one of the show's two longest-serving cast members. The other is Steven Robertson, who plays DC Sandy Wilson. Robertson remains on the show. After Series 11, he will be the last cast member still standing from the original 2013 pilot GB News.
Shetland draws a peak UK audience of around 7.2 million viewers per series opener. The show is also a real economic engine for the islands, generating an estimated £1 million or more in local economic activity each year through jobs and services. Losing Tosh raises questions about whether that loyal audience will follow the new direction.
Ashley Jensen's DI Calder is still seen by many fans as an outsider figure. With Tosh gone, DC Sandy Wilson becomes the sole local link to the show's roots Hello Magazine. The BBC will likely introduce a new character in Series 12 to fill the gap. For now, all attention turns to how Tosh's final case ends — and whether the show can hold its audience without her.
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