Hugh Grant (Premierminister), Bill Nighy (Billy Mack), Colin Firth (Jamie), Liam Neeson (Daniel), Thomas Brodie-Sangster (Sam(uel)), Keira Knightley (Juliet), Emma Thompson (Karen), Alan Rickman (Harry), Rowan Atkinson (Rufus), Nina Sosanya (Annie), Laura Linney (Sarah), Martin Freeman (John), Heike Makatsch (Mia), Kris Marshall (Colin Frissell), Joanna Page (Just Judy), Martine McCutcheon (Natalie), Julia Davis (Nancy, Caterin), Billy Bob Thornton (US-Präsident), Sienna Guillory (Jamies Freundin), Adam Godley (Mr. Trench), Elisabeth Margoni (Eleonore), Rodrigo Santoro (Karl), Dan Fredenburgh (Jamies Bruder), Andrew Lincoln (Mark), Chiwetel Ejiofor (Peter), Gregor Fisher (Joe), Michael Fitzgerald (Michael, Sarahs Bruder), Brian Bovell (Radio Watford-DJ), Edward Hardwicke (Sams Großvater), Shaughan Seymour (Film-Kameramann), Denise Richards (Carla), Frances de La Tour (Lesbische Geliebte), Rory MacGregor (Ingenieur), Richard Hawley (Alex, Vize-Premierminister), Lúcia Moniz (Aurelia)