James McAvoy as Arthur (voice)

Hugh Laurie as Steve (voice)

Bill Nighy as Grandsanta (voice)

Jim Broadbent as Santa (voice)

Imelda Staunton as Mrs Santa (voice)

Ashley Jensen as Bryony (voice)

Marc Wootton as Peter (voice)

Laura Linney as North Pole Computer (voice)

Eva Longoria as Chief De Silva (voice)

Ramona Marquez as Gwen (voice)

Michael Palin as Ernie Clicker (voice)

Sanjeev Bhaskar as Lead Elf (voice)

Robbie Coltrane as Lead Elf (voice)

Joan Cusack as Lead Elf (voice)

Rhys Darby as Lead Elf (voice)

Jane Horrocks as Lead Elf (voice)

Iain McKee as Lead Elf (voice)

Andy Serkis as Lead Elf (voice)

Dominic West as Lead Elf (voice)

Peter Baynham as Elf (voice)

Cody Cameron as Elf (voice)

Kevin Cecil as Elf (voice)

Kevin Eldon as Elf (voice)

Rich Fulcher as Elf (voice)

Bronagh Gallagher as Elf (voice)

Pete Jack as Elf (voice)

Danny John-Jules as Elf (voice)

Emma Kennedy as Elf (voice)

Stewart Lee as Elf (voice)

Seamus Malone as Elf (voice)

Kris Pearn as Elf (voice)

Alan Short as Elf (voice)

Sarah Smith as Elf (voice)

Adam Tandy as Elf (voice)

Ryan Patrick Donahoe as Pedro (voice)

Finlay Duff as French Boy (voice)

Rich Hall as Idaho Man (voice)

Clint Dyer as Reporter (voice)

Donnie Long as Reporter (voice)

Jerry Lambert as N.O.R.A.D (voice)

Deborah Findlay as General (voice)

David Schneider as General (voice)

Ian Ashpitel as UNFITA OPS (voice)

Julia Davis as UNFITA OPS (voice)

Kerry Shale as UNFITA OPS (voice)

Tamsin Greig as Additional Voices (voice)

Alistair McGowan as Additional Voices (voice)