It's an unforgettable Christmas for the townsfolk of Wellington-on-Sea when the worst snowstorm in history alters everyone's plans — including Santa's.

• Locksmith Animation
• DNEG
• Brian Cox
• Fiona Shaw
• Jodie Whittaker
• Bill Nighy
• Lolly Adefope
• Alex MacQueen
• Katherine Parkinson
• Sindhu Vee