“Outrun” rates as a personal triumph for Ronan, 30, who carries the film and is in every scene. It was Ronan’s husband, the “Slow Horses” star Jack Lowden, 34, who discovered the source material: Amy Liptrot’s bestselling memoir which Liptrot adapted for the screen.

The addict is Rona (Saoirse Ronan), whose life in London as a microbiologist and relationship with a kind boyfriend (Paapa Essiedu) is destroyed through the lens of alcohol. We are shown bar fights and their resulting wounds as well as "near sexual assault" as her grip on reality is slowly washed down the drain.

Saoirse Ronan has told RTÉ Entertainment that she feels "calmer about just trusting the process" after making her debut as a producer while also starring in the new drama The Outrun.