Hugh Grant

The Prime Minister

Alan Rickman

Harry

Emma Thompson

Karen

Liam Neeson

Daniel

Martine McCutcheon

Natalie

Colin Firth

Jamie Bennett

Bill Nighy

Billy Mack

Laura Linney

Sarah

Lúcia Moniz

Aurelia

Andrew Lincoln

Mark

Keira Knightley

Juliet

Chiwetel Ejiofor

Peter

Gregor Fisher

Joe

Martin Freeman

John

Joanna Page

Just Judy

Heike Makatsch

Mia

Thomas Brodie-Sangster

Sam

Kris Marshall

Colin Frissell

Rodrigo Santoro

Karl

Abdul Salis

Tony

Rowan Atkinson

Rufus, Jewellery Salesman

Rory MacGregor

Engineer

Sienna Guillory

Jamie's Girlfriend

Billy Bob Thornton

The US President

Olivia Olson

Joanna Anderson

Nina Sosanya

Annie

Frank Moorey

Terence, Who's in Charge

Julia Davis

Nancy the Caterer

Shaughan Seymour

Movie Cameraman

Edward Hardwicke

Sam's Grandfather

Caroline John

Sam's Grandmother

Brian Bovell

Radio Watford DJ

Marcus Brigstocke

Mikey, DJ Interviewer

Richard Hawley

Alex, Deputy Prime Minister

Gillian Barge

Cabinet Minister

Anthony McPartlin

Ant

Declan Donnelly

Dec

Peter Marinker

US Expert

Meg Wynn Owen

PM's Secretary

Jo Whiley

Radio DJ

Michael Parkinson

Parky

John Sharian

Wisconsin Taxi Driver

Ivana Miličević

Stacey, American Dreamgirl

January Jones

Jeannie, American Angel

Elisha Cuthbert

Carol-Anne, American Goddess

Emma Buckley

Jamie's Sister

Sheila Allen

Jamie's Mum

Colin Coull

PM's Bodyguard, Gavin

Margery Mason

Harris Street Old Lady

Joanna Bacon

Natalie's Mum

Bill Moody

Natalie's Dad

Paul Slack

John's Brother

Adam Godley

Mr Trench

Arturo Venegas

Mr. Anderson

Claudia Schiffer

Carol

Jamie Edgell

Airport Guard

Paul Heasman

Airport Guard

Tony Lucken

Airport Guard

Shannon Elizabeth

Harriet, the Sexy One

Denise Richards

Carla, the Real Friendly One

Richard Curtis

Trombone Player (uncredited)

Frances de la Tour

Lesbian Lover (uncredited)

Rebecca Frayn

Joanna (Daniel's Dead Wife) (uncredited)

Jeanne Moreau

Taxi Passenger at Marseille Airport (uncredited)

Anne Reid

Headmistress (uncredited)