Ben Whitehead as Wallace (voice)

Peter Kay as Chief Inspector Mackintosh (voice)

Lauren Patel as P.C. Mukherjee (voice)

Reece Shearsmith as Norbot (voice)

Diane Morgan as Onya Doorstep (voice)

Adjoa Andoh as Judge (voice)

Muzz Khan as Anton Deck (voice)

Lenny Henry as Mr. Convenience (voice)

Victoria Elliott as Additional Voices (voice)

Jon Glover as Additional Voices (voice)

Bethan Mary-James as Additional Voices (voice)

Richard Beek as Additional Voices (voice)

David Holt as Additional Voices (voice)

Adrian Rhodes as Additional Voices (voice)

John Sparkes as Additional Voices (voice)

Maya Sondhi as Additional Voices (voice)

Tom Doggart as Additional Voices (voice)

Merlin Crossingham as Additional Voices (voice)

Lizzie Waterworth as Additional Voices (voice)

Roman Kemp as Additional Voices (voice)

Garth Jennings as Zookeeper (voice) (uncredited)