Oni attended
Millfield in
Somerset, where she studied drama for her
A-levels. Oni had a passion for acting since the age of five, which she accredits to watching ''
Singin' in the Rain'' as a child in
Nigeria. Despite this, she did not believe she was on the road to an acting path, feeling as though she was one of the least favourites in her drama class at Millfield. She has instead credited her dance teacher for instilling confidence in her, stating: "She saw something in me I did not see in myself, and she pushed me harder than the other dancers in Bazique to do more ballet exams in a year than anyone else at the time. So, she and I had a lot of private lessons over break and lunch times." Oni then attended the
University of Southampton, where she studied economics. Whilst there, she was part of various dance and threatre groups, as well as being the president of the
Jazz dance society. She went on to study at the
London School of Economics, where she studied economic history, as well as participating in their drama society. She then worked at
Deloitte for three years as a management consultant. She portrayed
Queen Njinga. A year later, she was cast in the
BBC medical drama series
Casualty. She made her first appearance as
Ngozi Okoye, a
staff nurse, on 6 January 2024. Oni was the centre of a high-profile storyline in which her character was revealed to be an alcoholic, suffering various relapses, as well as her tumultuous relationship with
Nicole Piper (
Sammy Dobson). ==Filmography==