[1] A graduate of the Royal Welsh College of Music and Drama, Boyle began his acting career on London stage and rose to prominence for originating the role of Scorpius Malfoy in the West End and Broadway productions of the play Harry Potter and the Cursed Child (2016), for which he won the Laurence Olivier Award for Best Actor in a Supporting Role and was nominated for the Tony Award for Best Featured Actor in a Play.

Boyle said this helped develop his acting skills, as he would improvise dialogue while watching other children play games without him.

[3] He was expelled from school at age 16, then hired and fired within a week from a night club for drinking at work.

[4][5] He started his acting career in a series of what Boyle called “the worst productions you’ve ever seen,” including a version of Romeo and Juliet, alongside his fellow Belfast-born actor and longtime friend Lola Petticrew.

[6] In 2013, he began training at the Royal Welsh College of Music and Drama in Cardiff before graduating in 2016 with a BA (Hons) in acting.