Rafe Spall

Martin Humphreys

Orion Lee

Deng Laoshi

Alex Lawther

Isaac Cooper

Morgan Matthews

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Eddie Marsan

Richard

Sally Hawkins

Julie Ellis

Asa Butterfield

Nathan Ellis

Clare Burt

Doctor

Martin McCann

Michael Ellis

Jo Yang

Zhang Mei

Alexa Davies

Rebecca Dunn

Jake Davies

Luke Shelton

Paul J. Dove

John

Percelle Ascott

Ben Morgan

Christina Low

IMO Contestant

Edward Baker-Close

Nathan Ellis (9 yrs)

Suraj Rattu

Pav Kamdar

Jamie Ballard

Headmaster

Adam Foster

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Lee Zhuo Zhao

Li Jing

Shannon Beer

Caz

Tasha Connor

Jessie

Bo-Han Huang

Luke's Buddy

Song-Hung Chang

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Lawrence Jeffries

Schoolboy