Trailer
Images
 | Lily Collins as Rosie Dunne |
 | Sam Claflin as Alex Stewart |
 | Christian Cooke as Greg |
 | Tamsin Egerton as Sally |
 | Suki Waterhouse as Bethany Williams |
 | Jaime Winstone as Ruby |
 | Art Parkinson as Gary Dunne |
 | Jamie Beamish as Phil |
 | Lorcan Cranitch as Dennis Dunne |
 | Ger Ryan as Alice Dunne |
 | Lily Laight as Katie (12 yrs) |
 | Matthew Dillon as Toby (12 yrs) |
| Rosa Molloy as Katie (5 yrs) |
| Sadbh Malin as Clare |
| Nick Lee as Herb |
| Ciaran McGlynn as Dick |
| Jusin Holmes as Jonathan |
| Max Cleary as Joey Dunne |
| Aaron Kinsella as Toby (6 yrs) |
 | Lara McDonnell as Rosie (10 yrs) |
| Beau Rose Garratt as Rosie (6 yrs) |
| Tom John Kelly as Alex (10 yrs) |
| Tighe Wardell as Alex (6 yrs) |
 | David Crowley as Policeman Adam |
| Marion O'Dwyer as Mrs. Casey |
 | Róisín O'Donovan as Midwife |
 | Jake Manley as Alex's Boston Friend 1 |
| Art | |
| Judy Farr | Set Decoration |
Directing | |
| Christian Ditter | Director |
Writing | |
| Juliette Towhidi | Screenplay |
| Cecilia Ahern | Novel |
Art | |
| Matthew Davies | Production Design |
Production | |
| Simon Brooks | Producer |
| Gail Stevens | Casting |
Costume & Make-Up | |
| Leonie Prendergast | Costume Design |
Sound | |
| Ralf Wengenmayr | Original Music Composer |
Editing | |
| Tony Cranstoun | Editor |
Camera | |
| Christian Rein | Director of Photography |
Art | |
| Fabian Jonathan | Art Direction |
Directing | |
| Kathleen Weir | Script Supervisor |
Sound | |
| Pia Hoffmann | Music Supervisor |
Editing | |
| Fiona Starogardzki | First Assistant Editor |
Camera | |
| Jan Thijs | Still Photographer |
| Jonathan Hession | Still Photographer |
| Markus Eckert | Steadicam Operator |
Sound | |
| Barry O'Sullivan | Production Sound Mixer |
