 | Emilia Clarke als Kate Andrich |
 | Henry Golding als Tom Webster |
 | Michelle Yeoh als Santa |
 | Emma Thompson als Petra Andrich |
 | Lydia Leonard als Marta Andrich |
 | Boris Isaković als Ivan Andrich |
 | Rebecca Root als Dr. Addis |
 | Ingrid Oliver als Police Woman Crowley |
 | Laura Evelyn als Police Woman Churchill |
 | Patti LuPone als Joyce |
 | Calvin Demba als Nathan |
 | Ritu Arya als Jenna |
 | Ansu Kabia als Rufus |
 | Jade Anouka als Alba |
 | Rob Delaney als Theatre Director |
 | Peter Serafinowicz als Theatre Producer |
 | Sara Powell als Casting Director |
 | Peter Mygind als The Dane (aka ‘Boy’) |
 | Amit Shah als Andy |
 | Maxim Baldry als Ed |
 | Margaret Clunie als Sarah |
 | Sue Perkins als Ice Show Director |
 | John-Luke Roberts als Klaus the German Clown |
 | Madison Ingoldsby als Young Kate |
 | Lucy Miller als Young Marta |
| Bilal Zafar als Oscar |
| Ben Owen-Jones als Danny |
 | David Hargreaves als Arthur |
 | Joe Blakemore als Tom |
 | Anna Calder-Marshall als Dora |
 | Leon Delroy Williams als Traffic Cone Man |
 | Jassie Mortimer als Croatian Woman |
 | Michael Matovski als Croatian Man |
 | Jake Lampert als Angry Man on Bus |
 | Liran Nathan als Moroccan Vendor |
 | Laila Alj als Moroccan Vendor's Wife |
 | David Mumeni als Guy in Pub |
 | Andrew Ridgeley als Man in Audience at Homeless Shelter Benefit (uncredited) |
 | Jacqueline Ramnarine als Homeless Person (uncredited) |
 | Nichola Jean Mazur als Nurse Jane (uncredited) |
 | Fabien Frankel als Fabien |
| Emma Thompson | Screenplay |
| Bryony Kimmings | Screenplay |
| Emma Thompson | Producer |
| Erik Baiers | Producer |
| David Livingstone | Producer |
| Paul Feig | Director |
| George Michael | Producer |
| Alice Searby | Casting Director |
| Gary Freeman | Production Design |
| Theodore Shapiro | Original Music Composer |
| Sarah Bradshaw | Executive Producer |
| John Schwartzman | Director of Photography |
| Fiona Weir | Casting Director |
| Renee Ehrlich Kalfus | Costume Design |
| Richard Hardy | Art Direction |
| Raffaella Giovannetti | Set Decoration |
| Catherine Grove | Makeup & Hair |
| Nadine Moseley | Makeup & Hair |
| Chloë Pyne | Makeup & Hair |
| Tom Mulberge | Second Assistant Director |
| Heather Rackstraw | Art Department Assistant |
| Paul Walsh | Props |
| Sam Barry-Parker | Assistant Director of Photography |
| Yasmin Al-Naib | Assistant Set Decoration |
| George Knowles | Additional Photography |
| Claire Peerless | Art Department Assistant |
| Dale Walters | Props |
| Brent White | Editor |
| Dave Fisher | Charge Scenic Artist |
| Jo Barrass-Short | Makeup & Hair |
| Rebecca Adams | Production Supervisor |
| Beth Hajdukiewicz | Art Department Assistant |
| Peter Hooper | Greensman |
| Ida Grundsoee | Draughtsman |
| Lara Humphreys | Art Department Assistant |
| Roberto Oliveri | Art Department Assistant |
| John W. Wheatley | Props |
| Tom Still | Supervising Art Director |
| Charlotte Amelia Miles | Production Assistant |
| Bevan de Kock | Greensman |
| Daniel Phillips | Makeup & Hair |
| Martin Rookes | Props |
| Simone Goodridge | Unit Production Manager |
| Annie Hitchcock | Crowd Assistant Director |
| Grace James | Set Painter |
| Laura McDonald | Art Department Trainee |
| Michael Solinger | Production Supervisor |
| Phil Booth | First Assistant Director |
| Sandro Piccarozzi | Assistant Set Decoration |
| Pippa Woods | Makeup & Hair |
| Joel Block | Standby Property Master |
| Colin Matthews | Props |
| Andrea Cracknell | Makeup & Hair |
| Cade Featherstone | Assistant Art Director |
| Harry Stoyle | Props |
| Holly Caddy | Makeup & Hair |
| Dianah Jane Coleman | Petty Cash Buyer |
| Shane Harford | Art Department Assistant |
| Isona Rigau | Standby Art Director |
| Sean T. Stratton | Production Executive |
| Grant Butler | Third Assistant Director |
| Cécile Bouquet | Art Department Coordinator |
| Lauren Wakefield | Graphic Designer |
| Greg Wise | Story |
| Laura Richardson | Property Buyer |
| Jennifer White | Choreographer |
| Greg Powell | Stunts |
| Nikita Mitchell | Stunt Double |
