 | Maisie Williams als Lydia Lamont |
 | Maxine Peake als Eileen Lamont |
 | Greta Scacchi als Miss Edith Mantel |
 | Monica Dolan als Miss Martha Alvaro |
 | Mathew Baynton als Mr. Hopkins |
 | Florence Pugh als Abbie Mortimer |
 | Joe Cole als Kenneth Lamont |
 | Morfydd Clark als Miss Pamela Charron |
 | Anna Burnett als Susan |
 | Hannah Rose Caton als Titch |
 | Evie Hooton als Janet |
 | Katie Ann Knight als Connie |
 | Lauren McCrostie als Gwen |
 | Elizabeth Marsh als Miss Fanshawe |
 | Hannah Stokely als Miss Ash |
| Guy Morris als Teacher #1 |
| Katherine Peat als Teacher #2 |
| Ben Kerfoot als Bike Boy |
| Jiggy Bhore als Mrs. Maud Leece |
| Crissy O'Donovan als School Nurse |
 | Simon Paisley Day als Psychiatrist |
 | Ellie Bamber als Schoolgirl #2 |
| Lizzie Francke | Executive Producer |
| Luc Roeg | Producer |
| Cairo Cannon | Producer |
| Carol Morley | Director |
| Agnès Godard | Director of Photography |
| Rob Price | Foley Mixer |
| Paul Driver | Visual Effects Producer |
| Andy Quinn | Digital Compositor |
| Kylie Jonkman | Makeup Trainee |
| Gisela Evert | Post Production Supervisor |
| Christine Allsopp | Makeup Designer |
| Rob Hughes | Sound Re-Recording Mixer |
| Christine Langan | Executive Producer |
| J. Alexandra Roberts | Sound Assistant |
| Joanne Crowther | Production Manager |
| Sarah Howe | Boom Operator |
| Peter Hampden | Executive Producer |
| Donall McCusker | Line Producer |
| Andrew Orr | Executive Producer |
| Mary Cooke | Makeup & Hair |
| Elaine Mackenzie | First Assistant Director |
| Tracey Warren | Second Assistant Director |
| Norman Merry | Executive Producer |
| Chris Wyatt | Editor |
| Shaheen Baig | Casting |
| Claire Whiteley | Makeup Supervisor |
| Paul Davies | Sound Designer |
| Phil Hunt | Executive Producer |
| Hannah Green | Third Assistant Director |
| Peter Shaw | Dialogue Editor |
| Bryan Dunkley | Compositor |
| Robert Farr | Sound Re-Recording Mixer |
| Jane Levick | Production Design |
| Compton Ross | Executive Producer |
| Vanessa Blackburn | Art Direction |
| Sian Jenkins | Costume Design |
| Grant Bridgeman | Sound Recordist |
| Philip Herd | Co-Producer |
| Tracey Thorn | Original Music Composer |
| Vanessa Blackburn | Graphic Designer |
| Aimee Spinks | Still Photographer |
| Carol Morley | Screenplay |
| Rebecca Long | Executive Producer |
| Ian Davies | Executive Producer |
| Nellie Burroughes | Stunt Double |
| Florence Pugh | Songs |
