McArthur played the part of Dolly in the 30th anniversary touring production of Tony Roper's The Steamie in the Autumn of 2017.[10]
In 2024, she appeared in the documentary Since Yesterday: The Untold Story of Scotland’s Girl Bands by Blair Young and Carla Easton, which premiered at the Edinburgh International Film Festival on August 21 of that year.[9][11]
^ abHawthorne, Katie (21 August 2024). "'They couldn't even afford a bag of chips!': Scotland's great lost all-female bands". The Guardian. Retrieved 21 August 2024. Such was the fate of 80s post-punk group Sophisticated Boom Boom, who supported Simple Minds and bagged John Peel sessions with their witty, stylish songs. Before they could get signed, singer Libby McArthur found out she was pregnant. In the film's saddest moment, she recalls telling the group, and later discovering that her bandmates had replaced her. "The loss was devastating," she says, "but I went out with my chin up. The one thing I decided was, you will not use that name. Sophisticated Boom Boom – you owe me that."