[1] They are from west Belfast and grew up on a council estate,[2] the eldest sibling to two sisters and a brother.

[3] Petticrew attended St Dominic's Grammar School for Girls,[4] and joined a local drama group when they were 12.

[5] Petticrew went on to train at the Royal Welsh College of Music & Drama, graduating in 2017 with a Bachelor of Arts in Acting.

They had more film roles in 2020, starring as the titular character in Dating Amber opposite Fionn O'Shea,[9] and playing Jessica and Alex in Here Are the Young Men and Shadows respectively.

That May, they played Orla Healy in the two-part drama Three Families, also on BBC One,[10] followed by Jane Seymour in the three-parter Anne Boleyn on Channel 5 in June.