Evanna Lynch
Emily
Michael Smiley
Robert
George Webster
Arden
Deirdre Mullins
Emily's Mother
Cathy Belton
Greasy Haired Teacher
Martin McCann
Swimming Teacher
Barry McGovern
Dr. Golding
Stella McCusker
Granny
Declan Conlon
Arden's father
Dónall Ó Héalai
Young Policeman
Ally Ní Chiárain
June
Laura Matassa
Midwife
John Travers
Square Head
Sarah Minto
Young Emily
Michael Hough
Peter Spade
Ali White
Arden's Mother
Millie Donnelly
Newborn Emily
Ann Marie Murray
Robert's school Groupie
Catherine Walsh
Nurse
Loui Vangelder
Steve
Sadie Fitzmaurice
Toddler Emily
Hunter Fitzmaurice
Toddler Emily
Conor Knox
Male Student
Kai Power
Young Arden
Kate Parry
Trapeze Artist
Bobby Calloway
Bored Student (uncredited)
Meghan Jones
Girl Swimming (uncredited)
Peter Robbie
Fan in Bookshop (uncredited)