Alison O’Donnell to leave Shetland after 13 years in the role of Tosh
Alison O’Donnell is departing the BBC murder mystery drama Shetland after 13 years as the character Tosh to explore other acting opportunities. The original cast member’s exit will feature in a new six-part series currently filming in Scotland, which is scheduled to air on BBC One and BBC iPlayer later this year, according to statements from the actress and production executives.
Why is Alison O’Donnell leaving the series?
O’Donnell decided to leave the production to pursue new acting roles. She described playing Tosh as the “greatest gift an actor could hope for,” noting that the role shaped her as a collaborator and actor over more than a decade.
The actress stated that the isles became a second home to her and her family. While she noted it would not be easy to leave, she expressed excitement for “new adventures” and future opportunities.
What happens to Tosh in the upcoming season?
Tosh’s final storyline is integrated into a six-part series focusing on an historic murder that affects several characters in the present day. Gaynor Holmes, Executive Producer for BBC Drama, stated the production will ensure the character is given a “fitting farewell.”
Kate Bartlett, Executive Producer at Silverprint Pictures, described Tosh as a “beloved character” known for empathy and warmth. Bartlett noted that O’Donnell’s performances grew and evolved across the series.
How has Shetland performed in the ratings?
The series remains a significant performer for the BBC, ranking among the top five most watched BBC Drama series of 2025. In Scotland, the show maintained its position as the No. 1 BBC Drama with audiences.
The production is part of a broader slate of Scottish-based BBC dramas, including Vigil, Rebus, Sutherland, and Granite Harbour. International distribution for the series is handled by ITV Studios.
Who is producing the new series?
Paul Logue serves as the lead writer for Series 11, working alongside Ross Dunsmore and Anita Vettesse. The series is produced by Angus Sharpe and directed by Jonny Blair and Ruth Carney.
Executive production is led by Gaynor Holmes for the BBC, as well as Denise Paul, Paul Logue, and Kate Bartlett for Silverprint Pictures.
What may happen next for the show?
The production could potentially introduce new characters to fill the void left by Tosh’s departure. Because the series continues to rank as a top drama in Scotland, the BBC is likely to maintain its focus on Scottish-based content.

Future seasons may continue to draw from the novels by Ann Cleeves, though the specific direction of the narrative after O’Donnell’s exit remains unconfirmed.
Frequently Asked Questions
When will the new series of Shetland air?
The new series is scheduled to air on BBC iPlayer and BBC One later this year.
Who is the lead writer for Series 11?
Paul Logue is the lead writer, collaborating with Anita Vettesse and Ross Dunsmore.
Where can viewers watch previous episodes of Shetland?
Series 1 through 10 are available to stream on BBC iPlayer.
How do you think the departure of a long-standing character like Tosh will change the dynamic of the series?