Simon Pegg as Sidney Young

Kirsten Dunst as Alison Olsen

Danny Huston as Lawrence Maddox

Megan Fox as Sophie Maes

Jeff Bridges as Clayton Harding

Gillian Anderson as Eleanor Johnson

Max Minghella as Vincent Lepak

Jefferson Mays as Bill Nathanson

Bill Paterson as Richard Young

Miriam Margolyes as Mrs. Kowalski

Kelan Pannell as Young Sidney

Janette Scott as Sidney's Mother

Kelly Jo Charge as Apollo Awards Presenter

Christian Maier Smith as Apollo Awards Guest

Katherine Parkinson as PR Woman

Felicity Montagu as Clipboard Nazi

Thandiwe Newton as Self

John Lightbody as Assistant Hotel Manager

Ian Bonar as Post Modern Review Staff

James Corden as Post Modern Review Staff

Fenella Woolgar as Post Modern Review Staff

Chris O'Dowd as Post Modern Review Staff

Hugh Thompson as Post Modern Review Staff

Emily Thorling as Post Modern Review Staff

Miquel Brown as Clayton's Assistant

Nathalie Cox as Woman in Bar

Sam Douglas as Barman

Charlotte Devaney as Bobbie

Gillian King as Sharps Assistant

Margo Stilley as Ingrid

Isabella Calthorpe as Anna

Hannah Waddingham as Elizabeth Maddox

Diana Kent as Rachel Petkoff

Emily Denniston as Maddox's Assistant

Ashley Madekwe as Vicky

Lisa McAllister as Sophie Maes' Assistant

Julia West as Mother Superior – Trailer

Brona C. Titley as Nun – Trailer

Charles de Bromhead as Young Priest – Trailer

Jane Perry as Mrs. Harding

Connie Wheeler as Harding Child

Lara Edmunds as Harding Child

Allen Lidkey as July 4th Party Guest

Robert B. Weide as July 4th Party Guest

Nathan Nolan as July 4th Party Waiter

Andy Lucas as Wizard Dentist

Alexandra Aitken as Nightclub Girl

Sarah Mennell as Flight Desk Attendant

Liat Baruch as Couple on Blanket

Eivind Karlsen as Couple on Blanket

Brian Austin Green as Party Guest (uncredited)

Toni Collette as Self (uncredited)

Daniel Craig as Self (uncredited)

Ricky Gervais as Self (uncredited)

Kate Winslet as Self (uncredited)

Edward Lemont as Sharps Magazine Receptionist (uncredited)

Dennis Jay Funny as Office Lobby Concierge (uncredited)

Elli as Newsstand Vendor (uncredited)

Jemma Bolt as Sharps Girl (uncredited)

Forbes KB as Hotel Security (uncredited)

James Schram as Doorman / Bouncer (uncredited)

Mitchell Green as Bouncer (uncredited)

Cris Blanco as Night Club Patron / Party Goer (uncredited)

Giada Dobrzenska as Fashion Party Girl (uncredited)

Oliver Martin as Maddox's Friend at Party (uncredited)

Davide Petrucci as Guest at Party (uncredited)

Ashton Swinford as Glamorati (uncredited)

Thor Knai as Sharps Party Celebrity (uncredited)

Debbie Attwell as Red Carpet Fan (uncredited)

Robert Stone as BAFTA Security (uncredited)

Michael Berendt as Award Winner (uncredited)