Rooney Mara
— Una Spencer
Ben Mendelsohn
— Ray Brooks
Riz Ahmed
— Scott
Ruby Stokes
— young Una Spencer
Tara Fitzgerald
— Andrea
Natasha Little
— Yvonne
Tobias Menzies
— Mark
Indira Varma
— Sonia
Poppy Corby-Tuech
— Poppy
Isobelle Molloy
— Holly
Ciarán McMenamin
— John
David Shields
— Joe
Sophie Stanton
— Carol
Sydney Wade
— Amy
Gráinne Keenan
— Jenny
Emilee Roscamp
— Emma
Dan Ball
— Nick
Xanthe Gibson
— Leah
Jessica Jean Harland Stubbs
— Jade
Katie Money
— Gemma
Alexander Bracq
— Packing Staff
Richard Cunningham
— Prosecutor
Madeleine Brolly
— Courtroom Clerk
Barney White
— Policeman 1
Brett Allen
— Policeman 2