Harry Hill

Harry Hill

Julie Walters

Nan

Simon Bird

Vet

Guillaume Delaunay

Kisko

Sheridan Smith

Michelle

Julian Barratt

Conch

Johnny Vegas

Abu (voice)

Marc Wootton

Barney Cull

Jim Broadbent

Cleaner

Matt Lucas

Otto

Camilla Beeput

Veterinary Receptionist

Shingai Shoniwa

Station Attendant

Tim Key

Toilet Attendant

Dave Thompson

Brain Number Two

Mike Facherty

Mr. Jones

Sean Foley

Fox

Jon Wennington

Motorist (uncredited)

Llewella Gideon

Midwife