Stephen Mangan

as Postman Pat (voice)

Jim Broadbent

as CEO (voice)

Rupert Grint

as Josh (voice)

David Tennant

as Wilf (voice)

Ronan Keating

as Postman Pat (singing voice)

Susan Duerden

as Sara Clifton (voice)

Sandra Teles

as Julian Clifton (voice)

T.J. Ramini

as Ben Taylor (voice)

Peter Woodward

as Carbunkle (voice)

Robin Atkin Downes

as Simon Cowbell (voice)

Brian George

as Ajay Bains (voice)

Parminder Nagra

as Nisha Bains (voice)

Jo Wyatt

as Meera Brains (voice)

Enn Reitel

as PC Selby / Reverend Timms / Pat Wannabe 2 / Raed (voice)

Jane Carr

as Mrs. Goggins / Granny (voice)

Dan Hildebrand

as Ted Glenn (voice)

Darren Richardson

as Alf Thompson / SDS Employee 2 (voice)

Jacob Witkin

as George Lancaster / Major Forbes (voice)

Jean Gilpin

as Miss Hubbard / Crowd Lady / Pat Wannabe 3 (voice)

Anastasia Griffin

as Dr. Sylvia Gilbertson / Lauren Taylor (voice)

Laura Solon

as Chat Host (voice)

Olivia Poulet

as Dorothy Thompson (voice)

Aimee Osbourne

as Amy Wrigglesworth (voice)

Becky Wright

as Lizzy Taylor (voice)

Steven Kynman

as Bill Thompson (voice)

Teresa Gallagher

as Lucy Selby (voice)

Charlie Woodward

as Charlie Pringle (voice)

Kieron Elliott

as Michael Lam / SDS Employee 1 (voice)

Mike Disa

as Jess / UDM 300 (voice)

Chris Evans

as Radio Host (voice)

Craig Ferguson

as Craig / Not a Dalek (voice)

Robert Anich

as Escapologist (voice)

Adam Smyth

as Cameraman 1 (voice)

Lucy Davis

as Director 1 (voice)

Kelly Beckett

as Reporter / SDS Employee 3 (voice)

Julian Stone

as Director 2 / Stagehand 2 (voice)

Dee Bradley Baker

as Pat Wannabe 1 (voice)

Tony Curran

as Paparazzi 2 (voice)

Greg Ellis

as Jimmy (voice)

Rachael Louise Miller

as Walla Artist (voice)