A father and son must team up to save Christmas when they discover Santa Claus sleeping in their garage, having crashed his sleigh and found himself on the run from the police.
| Actor | Role |
|---|---|
 Jim BroadbentSanta Claus | Santa Claus |
 Rafe SpallSteve | Steve |
 Warwick DavisSally | Sally |
 Jodie WhittakerAlison | Alison |
 Stephen GrahamBarber | Barber |
 Joanna ScanlanRuth | Ruth |
 Kit ConnorTom | Tom |
 Joshua McGuireTony | Tony |
 Ewen BremnerPC Finkerton | PC Finkerton |
 Hera HilmarWPC Boyle | WPC Boyle |
 Nonso AnozieKnuckles | Knuckles |
 Perry BensonJimbo | Jimbo |
 Matt KingBrian | Brian |
 Bjarne HenriksenLars | Lars |
| MMick WalterEntwhistle | Entwhistle |
 Brian BovellPoliceman | Policeman |
 Simon KunzUgly Sister | Ugly Sister |
 Graham HughesBuster Evergreen | Buster Evergreen |
 Leigh GillSpecs | Specs |
 Mark Del AmoHoarse Prisoner | Hoarse Prisoner |
 Neil AshtonAnother Prisoner | Another Prisoner |
 Susanna ReidBreakfast TV Presenter | Breakfast TV Presenter |
 Jon SnowChannel 4 Newsreader | Channel 4 Newsreader |
| DDaniel BarkerRadio News Reporter | Radio News Reporter |
 Craig GarnerElf (uncredited) | Elf (uncredited) |
| NNicholas CammGuard | Guard |
| BBernadette WindsorDolores | Dolores |
 Mikey ThompsonElf | Elf |