[16] Following this, Atim appeared with Ako Mitchell in Walker's two-hander Klook's Last Stand, being praised by The Guardian for an energetic performance[17] and "tremendous stage presence" by The Daily Telegraph.

[9] In addition to this, Atim played three roles in Royal Shakespeare Company (RSC) productions: the Attendant in The Jew of Malta,[20] Julia in Love's Sacrifice,[21] and Assistant to Lady Politic Would-Be in Volpone.

[4] Atim received acclaim for her 2016 performances in the Donmar Warehouse's all-female Shakespeare Trilogy set in a women's prison, when she played Ferdinand in The Tempest, Gadshill and Lady Percy in Henry IV, and Lucius in Julius Caesar.

"[29] Atim won a 2018 Clarence Derwent Award, presented to best supporting actors in London productions, for her roles in The Tempest and Les Blancs.

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.

[32] 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 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".

[35][36] 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.

[38] The Times considered it to be an "intriguing look at female power ... that marks [Atim] as a playwright to watch",[39] whereas The Scotsman, while praising the songs and some performances, lamented that "the stories of the hugely privileged queen and the stressed-out modern black Londoner never quite come together as strongly as the situation promises.

[37] She composed the score for the play Time Is Love at London's Finborough Theatre in 2019,[42] the year that she was named one of the cast of the Game of Thrones prequel series Bloodmoon.