Taylor Zakhar Perez as Alex Claremont-Diaz

Nicholas Galitzine as Henry Hanover-Stuart Fox

Uma Thurman as Ellen Claremont

Clifton Collins Jr. as Oscar Diaz

Rachel Hilson as Nora Holleran

Sarah Shahi as Zahra Bankston

Ellie Bamber as Beatrice Hanover-Stuart Fox

Thomas Flynn as Philip Hanover-Stuart Fox

Stephen Fry as King James III

Malcolm Atobrah as Percy Okonjo

Akshay Khanna as Shaan Shrivistava

Aneesh Sheth as Amy Gupta

Juan Castano as Miguel Ramos

Donald Sage Mackay as Jeffrey Richards

Sharon D. Clarke as UK Prime Minister

Rachel Maddow as Rachel Maddow

Bridget Benstead as Martha Fitzroy Marry

Helen Minassian as British News Presenter

Isabelle Suwan as Staffer

Ben Santos as Brazilian Reporter

Charles Nishikawa as Japanese Prime Minister

Michael Ayala-Cole as Buckingham Palace Waiter

Robert William Carlisle as Gala Ball Attendee

Gabi Kerr as Australian News Reporter

Gabriella Fanuele as Nora's Co-worker

Georgie Fellows as Kensington Palace Attendant

Martin Bishop as King's Equerry

John King as Royal Security

Jonny Lee Kemp as Royal Security

Enver Mehmet as Royal Security

Monsurat Bello as Texas Campaign Manager

Hughie Mann as Rogue Papp

Karina Nuñez Anaya as Texas Hotel Maid

Derek Siow as Secret Service Agent

Valter Almeida as Secret Service Agent

Gaia Mondadori as Millicent

Reynold Koker as Secret Service Agent

Roy Harrop as Secret Service Agent

Joy Reid as Joy Reid

Kathryn López as Older Couple at White House Party

Frank Lopez as Older Couple at White House Party

Lila Walshe as Girl in Hospital

Khushboo Hirani as NYE Flirty Girl

Nathan Musoki as Interviewer

Brian Naylor as Interviewer

Kaya Brown-Hallam as Interviewer

Rita Estevanovich as Interviewer

Miranda Heldt as Interviewer

Annabella King as Ellen's Assistant

Casey McQuiston as Ellen's Speechwriter

Aleshia Williams as New Year's Eve Dancer

Josh Wild as New Year's Eve Dancer

Amira Walters-Byrne as New Year's Eve Dancer

Destiny Viva as New Year's Eve Dancer

Samara Tong as New Year's Eve Dancer

Amy Tomlinson as New Year's Eve Dancer

Mackenzie Stretch as New Year's Eve Dancer

Tyson Simon as New Year's Eve Dancer

Irene Salvi as New Year's Eve Dancer

Marcus St. Cyr as New Year's Eve Dancer

Julia Ruiz Fernandez as New Year's Eve Dancer

Troy Rochester as New Year's Eve Dancer

Elise Pinel as New Year's Eve Dancer

Ronke Olagunju as New Year's Eve Dancer

Bettie Moon as New Year's Eve Dancer

Mira Jebari as New Year's Eve Dancer

Emi Ichikawa as New Year's Eve Dancer

Robbie Ordona as New Year's Eve Dancer

Bethany Hunt as New Year's Eve Dancer

Nicole Hastings as New Year's Eve Dancer

Kamilla Halid as New Year's Eve Dancer

Jamie Graham as New Year's Eve Dancer

Marlie Goddard as New Year's Eve Dancer

Jakub Franasowicz as New Year's Eve Dancer

Kyle Flaherty as New Year's Eve Dancer

Emma Farnell-Watson as New Year's Eve Dancer

Davide Albonetti as New Year's Eve Dancer

Oliver Andrews as New Year's Eve Dancer

Miekaile Browne as New Year's Eve Dancer

Harrison Claxton as New Year's Eve Dancer

Cam as New Year's Eve Dancer

Tom Mather as New Year's Eve Dancer

Emma Falcon as NYE Camera Girl

Jemma Redgrave as Narration (voice)