Sasha Frost was born and raised in Easton, Bristol. She started acting in the Bristol Old Vic Young Company and then went on to train at The Liverpool Institute of Performing Arts (LIPA). She has been working as an actress in theatre, television and film ever since. Most recently starring in Noises Off (West End), Folk (Hampstead Theatre, Winner Best Supporting Actress Black British Theatre Awards) and the film adaptation of best-selling novel The Salt Path (BBC Film).

She is also known for TV and film work including Star Wars: Episode VII - The Force Awakens (2015), His Dark Materials (2019) and Eve (2019).