Joe Locke
Charlie Spring (17 eps)
Kit Connor
Nicholas Nelson (17 eps)
William Gao
Tao Xu (17 eps)
Yasmin Finney
Elle Argent (17 eps)
Tobie Donovan
Isaac Henderson (17 eps)
Cormac Hyde-Corrin
Harry Greene (14 eps)
Rhea Norwood
Imogen Heaney (14 eps)
Corinna Brown
Tara Jones (13 eps)
Kizzy Edgell
Darcy Olsson (13 eps)
Sebastian Croft
Ben Hope (13 eps)
Ashwin Vishwanath
Sai Verma (10 eps)
Evan Ovenell
Christian McBride (10 eps)
Fisayo Akinade
Mr Ajayi (10 eps)
Olivia Colman
Sarah Nelson (10 eps)
Jenny Walser
Tori Spring (9 eps)
Araloyin Oshunremi
Otis Smith (9 eps)
Chetna Pandya
Coach Singh (7 eps)
Bradley Riches
James McEwan (7 eps)
Nima Taleghani
Mr Farouk (7 eps)
Leila Khan
Sahar Zahid (7 eps)
Alan Turkington
Mr Lange (5 eps)
Georgina Rich
Jane Spring (5 eps)
Joseph Balderrama
Julio Spring (5 eps)
Momo Yeung
Yan Xu (4 eps)
Stephen Fry
Headmaster Barnes (voice) (4 eps)
Jack Barton
David Nelson (3 eps)
Bel Priestley
Naomi Russell (3 eps)
Ash Self
Felix Britten (3 eps)
Thibault de Montalembert
Stéphane Nelson (3 eps)
Isabel Adomakoh-Young
Miss Greenwood (2 eps)
Richard Stemp
Mr Budd (2 eps)
Zoe Molyneux
Keira the Tour Guide (2 eps)
Laura Hanna
Mariam Argent (2 eps)
Rachael Stirling
Amanda Olsson (2 eps)
Courtney-Jai
Self (1 eps)
Leonie Spilsbury
Miss Hyder (1 eps)
Frewyn Thursfield
Orchestra Girl (1 eps)
Jack O'Doherty
Young Nick (1 eps)
Livia Nelson
Young Tara (1 eps)
Fin Milne
Student 2 (1 eps)
Emilie Largier
Madame Martin (1 eps)
Jassal Kaur Kullar-Bell
Girl 2 (1 eps)
Hesper Holden
Tiny Girl 1 (1 eps)
Tabitha Byron
Tiny Girl 2 (1 eps)
Kush Mukerji
Student 1 (1 eps)
Ella Maisy Purvis
Girl 1 (1 eps)
David Thackeray
French Teacher (1 eps)
Irina Leoncio
Spanish Teacher (1 eps)
Phoenix Stone
Older Student (1 eps)
LJ Bennion
Ticket Clerk (1 eps)
Benjamin Cléry
Ice Cream Server (1 eps)
Sam Firth
Young Charlie (1 eps)
Eden Gough
Young Tao (1 eps)
Vanessa Cruickshank
Pauline Jones (1 eps)
Ethan Joseph-Robert
Alex the Artist (1 eps)
Rebecca Root
Principal (1 eps)
Baby Queen
Prom Singer (1 eps)
Habib Nasib Nader
Richard Argent (1 eps)