Florence Pugh as Angela Sayers

Ben Lloyd-Hughes as Jackson Sayers

Celia Imrie as Mrs. Green

Scott Chambers as Elliot

Georgina Bevan as Beth

James Cosmo as Grandpa

Shelley Conn as Professor Samantha Harlow

Niall Greig Fulton as Herman Green

Nicola Grier as Christine Sayers

Ian Lorimer Milne as Craig

Emma Atkin as Claire

Flora Brady as Missy

Anna Coote as Tammy

Stephen McCole as Frank

Charlotte Allen as Maddy

Daisy Mathewson as Susie

Daniel Campbell as Ghost

Charles Barrett as Victor