Rose Byrne (Annie Platt), Ethan Hawke (Tucker Crowe), Chris O'Dowd (Duncan Thomson), Azhy Robertson (Jackson), Lily Brazier (Ros Platt), Megan Dodds (Carrie), Ayoola Smart (Lizzie) more..., Enzo Cilenti (Barnesy), Pamela Lyne (Edna), Denise Gough (Gina), Phil Davis (Mayor Terry Barton), Kitty O'Beirne (Co-Worker), Alex Clatworthy (Katie), Ko Iwagami (Chatmate Ko), Lily Newmark (Carly), Eleanor Matsuura (Cat), Daniel Shaw (Jim (Cat's Date)), Frank Owen (Taxi Driver), Florence Keith-Roach (Caroline), Mage Rodrigo (Patient), Fehinti Balogun (Fehinti), Thomas Gray (Zak), Brodie Petrie (Jesse), Cal Petrie (Cooper), Nina Sosanya (Natalie), Matt King (Mark), Carol Anderson (Train Conductor), Georgina Bevan (Young Julie), Anabella Galbally (Baby Grace), Florence Galbally (Baby Grace), Emma Paetz (Grace (voice)), Toby Grimes (Kissing Couple), Yeliz Simsek (Kissing Couple), Terry Sach (Jukebox Man), Ninette Finch (Old Couple), Douglas Singer (Old Couple), Ronnie Evans (Museum Kid), Samuel Saphir (Museum Kid), Florence Stephenson (Museum Kid), Charlotte Bottomley (Museum Kid) and others.

Tamara Jenkins (Screenplay), Jim Taylor (Screenplay), Nick Hornby (Novel), Evgenia Peretz (Screenplay), Albert Berger (Producer), Ron Yerxa (Producer), Barry Mendel (Producer) more..., Judd Apatow (Producer), Jeffrey Soros (Producer), Simon Horsman (Executive Producer), Thorsten Schumacher (Executive Producer), Nick Hornby (Executive Producer), Paul Sarony (Co-Producer), Remi Adefarasin (Director of Photography), Sarah Finlay (Production Design), Sabine Hoffman (Editor), Robert Nassau (Editor), Nathan Larson (Original Music Composer), Maggie Phillips (Music Supervisor), Jeanne McCarthy (Casting), Dixie Chassay (Casting), Polly Hope (Unit Production Manager), Tom White (First Assistant Director), Emily Perowne (Second Assistant Director), Dave Forman (Stunt Coordinator), Tom Hatt (Stunt Double), Nicolas Wang (Stunt Double), Laura Swift (Stunt Double), Noah Leggott (Stunt Double), Oliver Dawson (Stunt Double), Simon Buck (Stunt Double), Gwyneth Ellis Mann (Stunt Double), Rob Hunt (Stunts), Nicky Kentish Barnes (Co-Executive Producer), Kwesi Dickson (Co-Executive Producer), Scott Eaton (Production Coordinator), Sarah Childs (Assistant Production Coordinator), Caroline Barclay (Art Direction), Alex Woodward (Art Department Assistant), Rachel Aulton (Art Department Coordinator) and others.