Season Regulars 4

1. 

   Joe Locke

   Charlie Spring

2. 

   Kit Connor

   Nick Nelson

3. 

   William Gao

   Tao Xu

4. 

   Yasmin Finney

   Elle Argent

Guest Stars 14

1. 

   Corinna Brown

   Tara Jones

2. 

   Kizzy Edgell

   Darcy Olsson

3. 

   Tobie Donovan

   Isaac Henderson

4. 

   Rhea Norwood

   Imogen Heaney

5. 

   Jenny Walser

   Tori Spring

6. 

   Stephen Fry

   Headmaster Barnes (voice)

7. Richard Stemp

   Mr Budd

8. Fin Milne

   Student 2

9. 

   Bradley Riches

   Student 3

10. 

    Sebastian Croft

    Ben Hope

11. 

    Fisayo Akinade

    Mr Ajayi

12. 

    Chetna Pandya

    Coach Singh

13. 

    Olivia Colman

    Sarah Nelson

14. 

    Alice Oseman

    Girl on Train (uncredited)

Crew 3