Patrick O'Neill
— Mark (Age 6)
Rob Davis
— Mark (Age 12)
Joe Wiltshire Smith
— Mark (Age 15)
Joanna van Kampen
— Mum
Meredith Lewis
— Hannah
Garin Jenkins
— Headmaster
Tom Price
— Maths Teacher
Clare Hingott
— School Secretary
S.J. Evans
— English Teacher
Thomas Rowlands
— School Bully
Matthew Ingram
— School Bully
Gavin Berry
— School Bully
Tom Herbert
— Boy in Park