 | Emma Roberts als Poppy Moore |
 | Alex Pettyfer als Freddie Kingsley |
 | Natasha Richardson als Mrs. Kingsley |
 | Kimberley Nixon als Kate |
 | Juno Temple als Jennifer 'Drippy' Logan |
 | Johnny Pacar als Roddy |
 | Linzey Cocker als Josie |
 | Aidan Quinn als Gerry Moore |
 | Georgia King als Harriet Bentley |
 | Sophie Wu als Kiki |
 | Lexi Ainsworth als Molly Moore |
 | Shelby Young als Ruby |
 | Shirley Henderson als Matron |
 | Nick Frost als Mr. Christopher |
 | Selina Cadell als Mrs. Loughton |
 | Daisy Donovan als Miss Rees-Withers |
 | Ruby Thomas als Jane |
 | Jason Watkins als Mr. Nellist |
| Eleanor Turner-Moss als Charlotte |
| Maisie Preston als 'Wow' Girl |
| Tommy Kijas als Jake |
 | Sonia Rockwell als Lola |
 | Kelsey Sanders als Skye |
 | Katelyn Pacitto als Twin #1 |
 | Kara Pacitto als Twin #2 |
 | Vanessa Branch als Rosemary |
 | Hallie Eisenberg als Ruthie |
| Nick Frost als Mr. Kingsley |
| Simon Cozens | Editor |
| Alexandra Ferguson | Line Producer |
| Joanna Colbert | Casting |
| Nick Moore | Director |
| Fiona Weir | Casting |
| Eric Fellner | Producer |
| Eve Stewart | Production Design |
| Michael Price | Original Music Composer |
| Diana Phillips | Producer |
| Tim Bevan | Producer |
| Lucy Dahl | Writer |
| Chris Seager | Director of Photography |
| Kirsten Lane | Music Consultant |
| Robert Wischhusen-Hayes | Set Decoration |
| Amy Byrne | Hairstylist |
| Fae Hammond | Makeup Designer |
| Liz Phillips | Hairstylist |
| Andrea Whitten | Makeup Artist |
| Charlotte Hayward | Makeup & Hair |
| Julia Caston | Costume Design |
| Tim Atkins | Foley Recordist |
| Doug Cooper | Sound Re-Recording Mixer |
| Peter Gleaves | Foley Mixer |
| Jeff Gomillion | ADR Mixer |
| Rick Gould | ADR Recordist |
| Robin Knapp | Foley Editor |
| Nick Kray | ADR Mixer |
| John Midgley | Sound Mixer |
| Philip Rogers | ADR Recordist |
| Sven Taits | Sound Re-Recording Mixer |
| Rachael Tate | ADR Recordist |
| Steven Price | Music Producer |
| Nick Angel | Music Supervisor |
| Karine Mauffrey | Stunt Double |
| Hank Amos | Stunts |
| Kallie Kerns | Stunt Driver |
| Nicola 'Nikki' Berwick | Stunt Coordinator |
| Jeremy Fitzgerald | Stunts |
| Danny Weselis | Stunt Coordinator |
| Larry Rippenkroeger | Stunts |
| Martin Kenzie | Second Unit Director of Photography |
| David Smith | Gaffer |
| Linda Brachman | First Assistant Director |
| Mark Holt | Special Effects |
| Marge Piane | Second Assistant Director |
| Simon Cozens | Second Unit Director |
| Paula Turnbull | Second Assistant Director |
| Samantha Smith McGrady | Second Assistant Director |
| Ben Howard | First Assistant Director |
| Marc Fisichella | Assistant Production Design |
| Miranda Colman | Third Assistant Director |
| Tim Sassoon | Visual Effects Supervisor |
| Sylvia Parker | Script Supervisor |
| Litza Bixler | Choreographer |
