Hannah Waddingham

as Narrator (voice)

Lolly Adefope

as Miss Skate (Voice)

Jayde Adams

as Plaice (voice)

Rob Brydon

as Fisherman / Whale / Starfish / Anchovy (voice)

Reuben Kirby

as Tiddler (voice)

Theo Fraser

as Johnny Dory (voice)

Paul Thornley

as Lobster (voice)