Amartey was born in Leeds, West Yorkshire, to a Ghanaian father and English mother.
[4] When she was eight, Amartey was cast as Baby Nala in a touring stage production of The Lion King.
However, after the first stop of the tour, Amartey began to feel homesick and her mother thought it was best for her to withdraw and wait for another role.
[5] Amartey made her screen debut aged twelve in an episode of the CBBC series 4 O'Clock Club in 2016.
"[5] In 2019, Amartey began starring in the CBBC series Almost Never as Chloe, a role she played for three years.