Jane Horrocks
Babs (voice)

Romesh Ranganathan
Nick (voice)

Daniel Mays
Fetcher (voice)
Josie Sedgwick-Davies
Frizzle (voice)

Peter Serafinowicz
Reginald Smith (voice)

Nick Mohammed
Dr Fry (voice)

Miranda Richardson
Mrs Tweedy (voice)

David Brooks
Burly Guard (voice)
Dan Williamson
Van Driver (voice)
Tom Doggart
2D Narrator / Male Guards (voice)