Asa Butterfield

Nathan Ellis

Rafe Spall

Martin Humphreys

Sally Hawkins

Julie Ellis

Eddie Marsan

Richard

Jo Yang

Zhang Mei

Alex Lawther

Isaac Cooper

Alexa Davies

Rebecca Dunn

Martin McCann

Michael Ellis

Orion Lee

Deng Laoshi

Jake Davies

Luke Shelton

Paul J. Dove

John

Percelle Ascott

Ben Morgan

Christina Low

IMO Contestant

Jamie Ballard

Headmaster

Clare Burt

Doctor

Shannon Beer

Caz

Tasha Connor

Jessie