Barry Murphy / Salesman
Sean Barrett / Father Fitzgerald
Donncha Crowley / Father Billy
Colum Gallivan / Father Reilly
Neil McCaul / Father Terry
Kevin McKidd / Father Deegan
Joe Taylor / Father Cleary
Andrew McCulloch / Bishop Tom Mccaskell
Billy Boyle / Chatback Priest
John O'Mahony / Chatback Priest
Ed Byrne / Teenager
Tom Farrelly / Teenager
Tony Rohr / Drunk Priest in Bar
John Delaney / Sat On Priest
Brendan Dempsey / Father Dick Mayo
Aine O'Connor / Sister Helen Locklear
Clive Geraghty / Fisherman
Brendan Burke / Award Ceremony Priest
Miche Doherty / Award Ceremony Priest
Stephen Kennedy / Award Ceremony Priest
Conor Mullen / Award Ceremony Priest
Pat O'Mahony / Award Ceremony Priest
Paul Tylak / Award Ceremony Priest
John Quinn / Police Sergeant

Tony Anscombe / Elf #3 (voice)
Alistair McGowan / Des Yeti /  Alan Snowman /  Trash Bag (voice)
Ben Stiller / Robbie the Reindeer (voice)
Britney Spears / Donner (voice)
James Woods / Narrator (voice)
Brad Garrett / Prancer (voice)
Hugh Grant / Blitzen (voice)
Leah Remini / Vixen (voice)
Jim Belushi / Santa Claus (voice)
Jerry Stiller / Old Jingle /  Trash Bag (voice)
Dick Enberg / Des Yeti /  Announcer (voice)
Dan Dierdorf / Alan Snowman (voice)
Grey Griffin / Elf
Grey Griffin / Mrs. Santa (voice)
Rob Paulsen / Bus Driver
Rob Paulsen / Elf #1
Rob Paulsen / Head Elf

Lexie Peel / Jason
Ryan Pope / Burglar
Rebecca Clow / Customer in Health Shop
Nicholas Barnes / Police Constable
Holly Earl / Unknown
Daniella Michieli / Unknown
Parhys-Jai Cato / Unknown
Andy Greenhalgh / Unknown

Sean Borg / Self
Grant Bovey / Self
David Briggs / Self
Jason Byrne / Self
Geoff Capes / Self
Glenn Gordon Caron / Self
Jo Caulfield / Self
Kevin Cecil / Self
Andrew Collins / Self
Michael Crawford / Self
Mary Crosby / Self
Barry Cryer / Self
Andrew Davenport / Self
Martin Deeson / Self
Dominik Diamond / Self
Adrian Dickson / Self
Anita Dobson / Self
Simon Donald / Self
Jim Dowdall / Self
Noel Edmonds / Self
Bobby Elliott / Self
Jeff Evans / Self
Tim Firth / Self
Rebecca Frayn / Self
Rob Frost / Self
Bob Geldof / Self
Janey Godley / Self
Leslie Grantham / Self
Bonnie Greer / Self
Stuart Hall / Self
Tony Hicks / Self
Charlie Higson / Self
Dave Hill / Self
Adam Hills / Self
Rachael Hopper / Self
Ian Hyland / Self
David Jason / Self
Alkarim Jivani / Self
Dom Joly / Self
Aled Jones / Self
Terry Jones / Self
Jason King / Self
Greg Lake / Self
C.P. Lee / Self
Iain Lee / Self
Jona Lewie / Self
Julian Linley / Self
Shane MacGowan / Self
Paul Manning / Self
Arthur Mathews / Self
Alistair McGowan / Self
Malcolm McLaren / Self
Justin Moorhouse / Self
Andrew Morahan / Self
Paul Morley / Self
Simon Nye / Self
Ardal O'Hanlon / Self
Yoko Ono / Self
Michael Palin / Self
Tara Palmer-Tomkinson / Self
Nick Park / Self
Lucy Porter / Self
David Quantick / Self
Fabio Quaradeghini / Self
Paul Rees / Self
Anneka Rice / Self
Andy Riley / Self
Angela Rippon / Self
Rowland Rivron / Self
John Robb / Self
Tony Robinson / Self
Joel Ross / Self
Peter Sallis / Self
David Schneider / Self
Alex Smith / Self
Emily Smith / Self
Jason Solomons / Self
Barbara Stubbles / Self
Brian Stubbles / Self
John Sullivan / Self
Chris Tarrant / Self
Ricky Tomlinson / Self
Midge Ure / Self
Nina Wadia / Self
Don Warrington / Self
Richard Whiteley / Self
Toyah Willcox / Self
Trix Worrell / Self
Gina Yashere / Self
Mark Yates / Self
Patrick Macnee / John Steed (archive footage) (uncredited)

Peter Bowles / Self
Debbie Chazen / Self
Jon Plowman / Self
Paul Mayhew-Archer / Self
Charlie Catchpole / Self
Stanley Baxter / Self
Russ Abbot / Self
David Renwick / Self
Doreen Mantle / Self
Joel Beckett / Self
Stephen Merchant / Self
Ricky Gervais / Self
Ashley Jensen / Self
Ricky Tomlinson / Self
Caroline Aherne / Denise Best (archive footage)
Patrick Baladi / Neil Godwin (archive footage)
Paul Barber / Denzil (archive footage)
Ronnie Barker / Norman Stanley Fletcher (archive footage)
Shirley Bassey / Self (archive footage)
Richard Beckinsale / Lennie Godber (archive footage)
Cilla Black / Self (archive footage)
John Bluthal / Frank Pickle (archive footage)
Richard Briers / Tom Good (archive footage)
Craig Cash / Dave Best (archive footage)
Emma Chambers / Alice Tinker (archive footage)
Martin Clunes / Gary Strang (archive footage)
Steve Coogan / Alan Partridge (archive footage)
Ronnie Corbett / Self (archive footage)
Michael Crawford / Frank Spencer (archive footage)
Mackenzie Crook / Gareth Keenan (archive footage)
Annette Crosbie / Margaret Meldrew (archive footage)
Lucy Davis / Dawn Tinsley (archive footage)
Les Dawson / Self (archive footage)
Paul Eddington / Jerry Leadbetter (archive footage)
Kevin Eldon / Fanny Thomas (archive footage)
James Fleet / Hugo Horton (archive footage)
Martin Freeman / Tim Canterbury (archive footage)
Dawn French / Geraldine Granger (archive footage)
Stirling Gallacher / Jennifer Taylor-Clark (archive footage)
Russell Harty / Self (archive footage)
Nerys Hughes / Sandra Hutchinson (archive footage)
Ralph Ineson / Chris 'Finchy' Finch (archive footage)
John Inman / Mr. Humphries (archive footage)
Michael Jayston / James Turner (archive footage)
Sue Johnston / Barbara Royle (archive footage)
Frank Kelly / Father Jack Hackett (archive footage)
Felicity Kendal / Barbara Good (archive footage)
Ralf Little / Antony Royle (archive footage)
Roger Lloyd Pack / Trigger (archive footage)
Nicholas Lyndhurst / Rodney Trotter (archive footage)
Kenneth MacDonald / Mike Fisher (archive footage)
Seymour Matthews / Auctioneer (archive footage)
Pauline McLynn / Mrs. Doyle (archive footage)
Buster Merryfield / Uncle Albert Trotter (archive footage)
Eric Morecambe / Self (archive footage)
Dermot Morgan / Father Ted Crilly (archive footage)
Ardal O'Hanlon / Father Dougal McGuire (archive footage)
Trevor Peacock / Jim Trott (archive footage)
Tessa Peake-Jones / Raquel Turner (archive footage)
André Previn / Self (archive footage)
Shaun Pye / Greg (archive footage)
John Rudling / Brabinger (archive footage)
Liz Smith / Norma Speakman (archive footage)
Gwyneth Strong / Cassandra Trotter (archive footage)
Angela Thorne / Marjory Frobisher (archive footage)
Gary Waldhorn / David Horton (archive footage)
Shaun Williamson / Barry (archive footage)
Richard Wilson / Victor Meldrew (archive footage)
Ernie Wise / Self (archive footage)
Mike Yarwood / Self (archive footage)

Russell Brand / Earth Guardian (voice)
Shane Richie / Trooper #1 (voice)
Ross Kemp / Trooper #2 (voice)

Jeremy Dyson / Viking 4 (voice)
Sean Hughes / Tapir (voice)
Natalie Imbruglia / Koala (voice)
Mark Gatiss / Viking (voice)
Steve Pemberton / Viking (voice)
Reece Shearsmith / Viking (voice)
Alistair McGowan / Des Yeti /  Alan Snowman (voice)
Ben Stiller / Robbie the Reindeer (voice)
Britney Spears / Donner (voice)
Jerry Stiller / Old Jingle (voice)
Jim Belushi / Tapir /  Little Magnus (voice)
Brad Garrett / Prancer (voice)
Brad Garrett / Viking #3 (voice)
Leah Remini / Koala (voice)
James Woods / Prison Guard /  Head Viking (voice)
Hugh Grant / Blitzen (voice)
Dick Enberg / Des Yeti (voice)
Dan Dierdorf / Alan Snowman (voice)
Grey Griffin / Arctic Fox /  Female Viking (voice)
Rob Paulsen / Viking #2 /  Viking #4 (voice)