Royce is best known for his roles as DC Jamie Desford in the fourth series of Line of Duty and as Reece in Murdered by My Boyfriend.
[2] He has since appeared as Dr Jamie Cole in Our Girl (2016), Jason Hales in Wanderlust (2018), Burt Rhodes in Judy (2019), Istredd in The Witcher (2019–present), and Doctor John Watson in The Irregulars (2021).
[6] In 2017, Pierreson appeared as AC-12 officer Jamie Desford in the fourth season of Line of Duty.
[7] In December 2022, Pierreson appeared as fitness instructor Miguel in I Am... Ruth alongside Kate Winslet.
[11] Pierreson married Natalie Herron on 5 July 2022 at Polhawn Fort, having met in 2017 at a festival in Budapest.