Robbie (voice)
Ardal O'Hanlon
Blitzen (voice)
Steve Coogan
Tapir (voice)
Sean Hughes
Koala (voice)
Natalie Imbruglia
Viking (voice)
Mark Gatiss
Steve Pemberton
Reece Shearsmith
Des Yeti (voice)
Alistair McGowan
Donner (voice)
Jane Horrocks
Prancer (voice)
Paul Whitehouse
Old Jingle (voice)
Harry Enfield
White Rabbit (voice)
Jeff Goldblum
Self (voice)
David Attenborough
Penguin (voice)
Ricky Gervais
Prison Guard (voice)
Rob Brydon
Jeremy Dyson
Director
Peter Peake