[7][5][8] She went on to study English and music at NUI Maynooth,[9][8] and screen acting at The Factory, Bow Street, Dublin.
[10][8][11] In 2010, while a student, Kerslake was cast in Kirsten Sheridan's Dollhouse, an unscripted Irish film.
[9][8] In 2016, Kerslake played the title character in A Date for Mad Mary directed by Darren Thornton.
[4][7] Her first London stage appearance was in May 2018 as Kat in Joe Penhall's Mood Music, director Roger Michell, at The Old Vic.
[4] From 2021 to 2023, Kerslake played Grace Ahern in the RTÉ One-Alibi whodunit mini-series Smother.