Sam Claflin Alex Stewart
Lily Collins Rosie Dunne
Suki Waterhouse Bethany Williams
Tamsin Egerton Sally
Art Parkinson Gary Dunne
Christian Cooke Greg
Jaime Winstone Ruby
Ger Ryan Alice Dunne
Jake Manley Alex's Boston Friend 1
Lorcan Cranitch Dennis Dunne
Jamie Beamish Phil
Lara McDonnell Rosie (10 yrs)
Aoife Byrne Stunt Double
Christian Ditter Director
Róisín O'Donovan Midwife
Marion O'Dwyer Mrs. Casey
Robert Kulzer Producer
David Crowley Policeman Adam
Jean Frenette Stunt Coordinator
Cecelia Ahern Novel
Juliette Towhidi Screenplay
Lily Laight Katie (12 yrs)
Judy Farr Set Decoration
Tony Cranstoun Editor
Martin Moszkowicz Executive Producer
Gail Stevens Casting
Pia Hoffmann Music Supervisor
Joe Condren Stunt Coordinator
Eimear O'Grady Stunt Double
Mario Hubert Sound Designer
Leonie Prendergast Costume Design
Ciaran McGlynn Dick
Sadhbh Malin Clare
Jonathan Hession Still Photographer
Sean Condren Stunts
Jay Jay Callan Second Assistant "B" Camera
Barry O'Sullivan Production Sound Mixer
Damien Devaney Man in the Lift
Stephen Mullan Hotel Manager
Ralf Wengenmayr Original Music Composer
Markus Eckert Steadicam Operator
Aaron Kinsella Toby (6 yrs)
Matthew Davies Production Design
Jan Thijs Still Photographer
Christian Rein Director of Photography
Simon Brooks Producer
Kris Edlund Airline Official
Emma Condren Stunts
Kathleen Weir Script Supervisor
Robbie O'Brien Stunts
Aran Condren Stunts
Jemma Curran Rosie's friend (uncredited)
Michael Hinreiner Sound Re-Recording Mixer
Tighe Wardell Alex (6 yrs)
Bobby Aherne Rosie's Friend
Heiko Müller Supervising Sound Editor
Nick Lee Herb
Nina Knott Visual Effects Producer
Fiona Starogardzki First Assistant Editor
Fabian Jonathan Art Direction
Tom John Kelly Alex (10 yrs)
Beau Rose Garratt Rosie (6 yrs)
Max Cleary Joey Dunne
Rudy Katkic Camera Operator
Rosa Molloy Katie (5 yrs)
Jusin Holmes Jonathan
Matthew Dillon Toby (12 yrs)