Vanessa Caswill Director Haley Lu Richardson Hadley Sullivan Actor, Executive Producer Ben Hardy Oliver Actor Sally Phillips Tessa Jones Actor Jameela Jamil Narrator Dexter Fletcher Val Actor Rob Delaney Actor Jessica Ransom Bridesmaid Bertie Actor Tom Taylor Luther Jones Actor Katie Lovejoy Screenwriter Matthew Kaplan Producer Chris Foss Executive Producer Matthew Janzen Executive Producer Mark Lane Executive Producer Luke Bryant Cinematographer Michelle Harrison Film Editing Joe Klotz Film Editing Paul Saunderson Original Music Francesca Massariol Production Design Philip A. Brown Art Director Fiona Albrow Set Decoration Kirsty Halliday Costume Design Colin Jones Casting