James Corden and Robbie Coltrane provide the voices for the Mouse and the Gruffalo in BBC One's animation of the popular children's book A half-hour animated film based on the classic children's picture book written by Julia Donaldson and illustrated by Axel Scheffler, tells the magical tale of a mouse who takes a walk though the woods in search of a nut. Encountering three predators who all wish to eat him – a fox, an owl and a snake – the plucky mouse has to use his wits to survive. He announces that he is meeting a monster with terrible features – a Gruffalo – and the three predators are each panicked into running away. Mouse is now increasingly confident. There is nothing that can touch him ... or so he thinks. Then, he rounds a corner and comes face to face with the terrible creature of his imagination – the Gruffalo. Mouse has to dig deep to escape the danger and manages to convince the monster that he is the scariest creature in the wood. The Gruffalo flees in fear. As quiet returns to the deep, dark wood, he finally finds a nut, and can eat it in peace... Mouse is voiced by James Corden, Fox by Tom Wilkinson, Owl by John Hurt, Snake by Rob Brydon, Mother Squirrel by Helena Bonham Carter and the Gruffalo by Robbie Coltrane.