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Superworm cast: Meet the voice actors in Julia Donaldson adaptation

Superworm has a super cast!

Programme Name: Superworm - TX: 25/12/2021 - Episode: n/a (No. n/a) - Picture Shows: The bugs and garden creatures lift Superworm above their heads in celebration. Papa Toad (PAUL THORNLEY), Butterfly (PATRICIA ALLISON), Superworm (MATT SMITH) - (C) Magic Light Pictures - Photographer: Magic Light Pictures

Little ones (and big ones) will be delighted on Christmas Day with a thrilling adventure from the brilliant mind of Julia Donaldson as another of her adaptations is brought to life.


Superworm follows the story of a very long and very strong worm who’s bravery and show-boating sometimes causes him to overlook what’s really important.

The Magic Light Production is a who’s who of British talent, with many famous voices you’ll certainly recognise.

Without further ado, read on for the star-studded voice cast of Superworm and who they play.

Matt Smith plays Superworm

Superworm (BBC)

Superworm is super long and super strong – and full of bravery. The cheeky chap is always on hand to help and entertain his friends in the garden, but when he’s kidnapped, it’s time for his pals to repay the favour.

Where have I seen Matt Smith before? Matt Smith is arguably most famous for his starring role in Doctor Who where he played the 11th incarnation of the Time Lord. He also played Prince Philip in The Crown seasons one and two, and will star in upcoming blockbuster, Morbius.

Buy Superworm by Julia Donaldson now! 

Patricia Allison is Butterfly

Butterfly in Superworm (BBC)

Superworm’s best friend Butterfly loves having fun with him. She’s incredibly determined and extremely loyal to her pals – and it’s up to Butterfly to help Superworm when he needs her most.

Where have I seen Patricia Allison before? Allison is most-known for her role as Ola Nyman in Netflix hit Sex Education. She also starred in the BBC’s adaptation of Les Miserables, playing Marguerite.

Kobna Holdbrook-Smith is Wizard Lizard

Wizard Lizard in Superworm (BBC)

Wizard Lizard is a nasty piece of work, and just wants to collect treasure for himself – no matter what the cost. After spotting Superworm’s strength and abilities, he kidnaps our hero and puts him under a wicked spell.

Where have I seen Kobna Holdbrook-Smith before? Holdbrook-Smith recently starred in The Split and Motherland, but also landed roles in Mary Poppins Returns and Zack Snyder’s Justice League. He is currently filming Wonka alongside Timothée Chalamet.

Rob Brydon is Crow

Crow in Superworm (BBC)

Crow is out to get all he can from working with the evil Wizard Lizard – mainly lots of tasty treats. He quite fancies a bite of Superworm – but can our hero escape his dangerous beak in time?

Where have I seen Rob Brydon before? Welsh actor and TV host Brydon is most famous for his role of Uncle Bryn in Gavin and Stacey. He also stars alongside Steve Coogan in award-winning show, The Trip.

Fun fact: this is Brydon’s ninth appearance in a Magic Light Productions adaptation of Donaldson’s work!

Buy Superworm by Julia Donaldson on Amazon.

Olivia Colman is the Narrator

Colman acts as our charming narrator throughout the thrilling tale and reads Julia Donaldson’s original text while the animation plays out.


Where have I seen Olivia Colman before? Like Smith, Oscar winner Colman has also starred in The Crown, acting as Queen Elizabeth II in seasons three and four. She is currently starring in Sky’s Landscapers, and also appears in Netflix film, The Lost Daughter.

Superworm will air on BBC One, Christmas Day at 2.30pm and will stream on BBC iPlayer the same day. If you’re looking for more to watch, check out our TV Guide. Visit our Drama hub for all the latest news.

This year’s Radio Times Christmas double issue is on sale now, featuring two weeks of TV, film and radio listings, reviews, features and interviews with the stars.