Olivia Colman (“The Crown”), Matt Smith (“Doctor Who”), Patricia Allison (“Sex Education”) and Rob Brydon (“The Trip” franchise) lead the voice cast of BBC animation special “Superworm.”

Based on the book “Superworm,” written by Julia Donaldson and illustrated by Axel Scheffler, the half-hour show will air over Christmas on BBC One and BBC iPlayer.

The show follows Superworm, who is a hero always on hand to help out all the other animals and insects, whose latest challenge is to fight the wicked Wizard Lizard and his servant Crow.

Colman said: “This is such a lovely project to be involved with. When reading the script, and imagining all those goings on at the end of the garden, I could really get a feel for the pure fun and joy that the film will bring. I’ve always loved these charming productions at Christmas and I’m delighted to be voicing the narrator.