Mia Wasikowska Miss Novak Sidse Babett Knudsen Miss Dorset Amir El-Masry Mr. Dahl Elsa Zylberstein Elsa's Mother Mathieu Demy Elsa's Father Ksenia Devriendt Elsa Luke Barker Fred Florence Baker Ragna Samuel D Anderson Ben Gwen Currant Helen Amanda Lawrence Miss Benedict Sam Hoare Fred's Father Camilla Rutherford Fred's Mother Keeley Forsyth Ragna's Mother Lukas Turtur Ragna's Father Isabel Lamers Doctor Andrei Hozoc Corbinian Laoisha O'Callaghan Helen's Mother (as Laisha O'Callaghan) Sade McNichols-Thomas Joan Szandra Asztalos Housekeeper Rebecca Crankshaw Sports Teacher Luka Caselton Fred's Brother Emily Stride Mother Toussaint Meghie Father