Chris O'Dowd
Roy Trenneman

Richard Ayoade
Maurice Moss

Katherine Parkinson
Jen Barber

Matt Berry
Douglas Reynholm

Noel Fielding
Richmond

Peter Serafinowicz
Newsreader (voice) / Voice Over (voice) / Lift (voice)

Tom Binns
Nolan

Lewis Macleod
Friendface (voice) / Charity Voice (voice) / Narrator (voice)

Belinda Stewart-Wilson
Barbara / Victoria

Nancy Lodder
Weeping Woman / Office Girl

Cordelia Bugeja
Abi

Bennet Thorpe
Office worker / Clown

Togo Igawa
Japanese Boss / Mr. Yamamoto

John Willie Hopkins
Postman / Postman Harry

Charlotte Weston
Stephanie / Jessica

Gemma Chan
Female Sulu / Ivana

Suzie Toase
Alison

Lucy Montgomery
April

Claudia Harrison
Delina

James Tovell
Terry