Born in Bristol, Martini was raised in villages in North Somerset by her parents.[2] She completed her secondary education locally.[3] Having starred in local youth plays with Winscombe Youth Theatre and undertaken the two week induction at the National Youth Theatre,[2] with an interest in illustration post A Levels at Churchill Academy and Sixth Form,[4][5] she began an arts foundation course. However, a teacher suggested that if she was interested in acting, then she should try it.
After failing to get into RADA (The Royal Academy of Dramatic Art) on her first attempt, Martini joined a one-year programme at the Bristol Old Vic Theatre School, where the company wrote their own plays that they produced in local schools.[2][6] She was subsequently accepted into RADA the following year.[2]
From 2020 to 2022, Martini portrayed Eadith in the Netflix series The Last Kingdom for seasons four and five.[10] She starred in the World War II science fiction drama Lola, released in August 2022.[11]
Personal life
On 26 June 2021, Martini came out as bisexual in an Instagram post.[12] Since late 2021, Martini has been in a relationship with English intimacy coordinator and model El Wood, which she announced publicly on social media on 1 January 2022.[13]
