Character Name : Nathan Ellis

Original Name : Asa Butterfield

Gender : Male

Character Name : Martin Humphreys

Original Name : Rafe Spall

Gender : Male

Character Name : Julie Ellis

Original Name : Sally Hawkins

Gender : Female

Character Name : Richard

Original Name : Eddie Marsan

Gender : Male

Character Name : Zhang Mei

Original Name : Jo Yang

Gender : Female

Character Name : Isaac Cooper

Original Name : Alex Lawther

Gender : Male

Character Name : Rebecca Dunn

Original Name : Alexa Davies

Gender : Female

Character Name : Michael Ellis

Original Name : Martin McCann

Gender : Male

Character Name : Deng Laoshi

Original Name : Orion Lee

Gender : Male

Character Name : Luke Shelton

Original Name : Jake Davies

Gender : Male

Character Name : John

Original Name : Paul J. Dove

Gender : Male

Character Name : Ben Morgan

Original Name : Percelle Ascott

Gender : Male

Character Name : IMO Contestant

Original Name : Christina Low

Gender : Female

Character Name : Nathan Ellis (9 yrs)

Original Name : Edward Baker-Close

Gender : Male

Character Name : Pav Kamdar

Original Name : Suraj Rattu

Gender : Male

Character Name : Headmaster

Original Name : Jamie Ballard

Gender : Male

Character Name : Doctor

Original Name : Clare Burt

Gender : Female

Character Name : Paediatrician

Original Name : Adam Foster

Gender : Male

Character Name : Li Jing

Original Name : Lee Zhuo Zhao

Gender : Male

Character Name : Caz

Original Name : Shannon Beer

Gender : Female

Character Name : Jessie

Original Name : Tasha Connor

Gender : Female

Character Name : Luke's Buddy

Original Name : Bo-Han Huang

Gender : Male

Character Name : Employee

Original Name : Song-Hung Chang

Gender : Male

Character Name : Schoolboy

Original Name : Lawrence Jeffries

Gender : Male

Character Name : Schoolboy

Original Name : Ciaran Wakefield

Gender : Male