2018 Clarence Derwent Award, presented to best supporting actors in London productions, for her roles in The Tempest and Les Blancs. Her leading role in Babette received a more mixed assessment, with The Times saying she was "the best thing about [the] production" while The Daily Telegraph review said "It's a pity ... that Babette, whose story this is, should remain, in Atim's somewhat remote performance, so distant a figure." She played Marianne Laine in the original run of the musical Girl from the North Country at The Old Vic in London from 26 July to 7 October 2017. Following the success of The Old Vic production, it transferred into London's West End at the Noël Coward Theatre from 29 December for a limited 12-week run until 24 March 2018. The play is set during the Great Depression and Atim's character Marianne Laine is a black woman, who was adopted by a white couple that run a struggling guesthouse. The character is pregnant and appears to have been forsaken by the father of her unborn child. The music for the show consists of songs by Bob Dylan and amongst the numbers that Atim performs are his "Tight Connection to My Heart (Has Anybody Seen My Love)" and "Idiot Wind". The Guardian described Atim as "outstanding" in the role, with delivery of "Tight Connection to My Heart (Has Anybody Seen My Love)" being "direct, unaffected and perfectly poised" and her performance of "Idiot Wind" a "beautiful reading". The Times stated that "Atim, in a strong cast, is standout," in an article that was headlined "She sings Dylan better than Bob." For her Girl from the North Country role, she received a nomination for Best Supporting Actress in a Play at the 18th WhatsOnStage awards and won the 2018 Laurence Olivier award for Best Supporting Actress in a Musical. In 2018, she played Emilia opposite Mark Rylance's Iago in Othello at Shakespeare's Globe, where according to The Independent, "she unleashed a fury that blew the greatest actor of his generation off the stage." Atim presented her first play as an author, Anguis, at the 2019 Edinburgh Festival Fringe. It features Cleopatra being interviewed by a scientist and singing, Atim also having composed the songs. The Times considered it to be an "intriguing look at female power ... that marks [Atim] as a playwright to watch", whereas The Scotsman, while praising the songs