Will Gluck Director James Corden Peter Rabbit Voice Fayssal Bazzi Mr. Tod Voice Domhnall Gleeson Mr. Jeremy Fisher, Mr. Thomas McGregor Actor Sia Mrs. Tiggy-Winkle Voice Colin Moody Benjamin Bunny Voice Sam Neill Old Mr. McGregor, Tommy Brock Actor Margot Robbie Flopsy, The Narrator Voice Elizabeth Debicki Mopsy Voice Daisy Ridley Cotton-Tail Voice Rose Byrne Bea, Jemima Puddle-Duck Actor Christian Gazal Felix D'eer Voice, Film Editing Ewen Leslie Pigling Bland Voice Natalie Dew Harrods Worker -- Janelle Actor Terenia Edwards Harrods Worker -- Siobhan Actor Marianne Jean-Baptiste General Manager Actor Gareth Davies Bannerman Actor Vauxhall Jermaine Harrods Security Actor Tom Greaves Harrods Security Actor Alexandra Gluck London Street Rat Voice Taryn Gluck London Street Rat Voice Sam Haft Postman Actor Sacha Horler Taxi Driver -- Betty Actor Will Reichelt JW Rooster II Voice Rob Lieber Executive Producer Doug Belgrad Executive Producer Jodi Hildebrand Executive Producer Catherine Bishop Executive Producer Susan Bolsover Executive Producer Emma Topping Executive Producer Jason Lust Executive Producer Jonathan Hludzinski Executive Producer Zareh Nalbandian Producer Peter Menzies Jr. Cinematographer Jonathan Tappin Film Editing Dominic Lewis Original Music Roger Ford Production Design Ian Gracie Supervising Art Direction Damien Drew Art Director Lisa Thompson Set Decoration Lizzy Gardiner Costume Design Nikki Barrett Casting