[4][5] Quansah-Breed made her professional debut joining the cast of SIX in 2018 for the UK tour production, which then moved permanently to the Arts Theatre in London.

In the same year she took part in the workshop of the coming-of-age musical thriller Game Theory, developed by UK theatre company Perfect Pitch and directed by Julie Atherton.

[10][11] Quansah-Breed took the role of Mimi Marquez in the Hope Mill Theatre production of RENT, which was due to open in 2020, but only ran five performances before a new UK COVID-19 lockdown.

[12] The production was directed by Luke Sheppard and starred Millie O'Connell as Maureen, Jocasta Almgill as Joanne, Blake Patrick Anderson as Mark, Tom Francis as Roger, Ahmed Hamad as Benny, Dom Hartley-Harris as Collins, and Alex Thomas-Smith as Angel.

[15] In 2023 Quansah-Breed returned in the role of Philoclea to the Hope Mill Theatre for their production of the musical Head Over Heels playing from January to March.

[19] Quansah-Breed is part of the all-female group SVN, together with original SIX cast members Jarnéia Richard-Noel (Jaye’J), Millie O’Connell, Natalie Paris, Alexia McIntosh (Lexi), Aimie Atkinson, and Grace Mouat.