Julia Roberts

Character: Anna Scott

Hugh Grant

Character: William Thacker

Gina McKee

Character: Bella

Tim McInnerny

Character: Max

Rhys Ifans

Character: Spike

Emma Chambers

Character: Honey

Hugh Bonneville

Character: Bernie

Richard McCabe

Character: Tony

James Dreyfus

Character: Martin

Dylan Moran

Character: Rufus the Thief

Roger Frost

Character: Annoying Customer

Henry Goodman

Character: Ritz Concierge

Julian Rhind-Tutt

Character: 'Time Out' Journalist

Lorelei King

Character: Anna's Publicist

John Shrapnel

Character: PR Chief

Emily Mortimer

Character: Perfect Girl

Dorian Lough

Character: Loud Man in Restaurant

Sanjeev Bhaskar

Character: Loud Man in Restaurant

Paul Chahidi

Character: Loud Man in Restaurant

Matthew Whittle

Character: Loud Man in Restaurant

Mischa Barton

Character: 12-year-old Actress

Clarke Peters

Character: 'Helix' Lead Actor

Ann Beach

Character: William's Mother

Samuel West

Character: Anna's Co-Star

Tony Armatrading

Character: Security Man

Andy de la Tour

Character: Journalist

Rupert Procter

Character: Journalist

Maureen Hibbert

Character: Journalist

David Sternberg

Character: Journalist

Arturo Venegas

Character: Foreign Actor

Phillip Manikum

Character: Harry the Sound Man

Patrick Barlow

Character: Savoy Concierge

Yolanda Vazquez

Character: Interpreter

Melissa Wilson

Character: Tessa

Emma Bernard

Character: Keziah

September Buckley

Character: Third Assistant Director

Dennis Matsuki

Character: Japanese Businessman

Alec Baldwin

Character: Jeff King (uncredited)

Simon Callow

Character: Simon Callow (uncredited)

Omid Djalili

Character: Coffee Shop Cashier (uncredited)

Matthew Modine

Character: Actor (uncredited)