Ardal O'Hanlon

Robbie (voice)

Steve Coogan

Blitzen (voice)

Jane Horrocks

Donner (voice)

Paul Whitehouse

Prancer (voice)

Harry Enfield

Old Jingle (voice)

Jeff Goldblum

White Rabbit (voice)

David Attenborough

Self (voice)

Ricky Gervais

Penguin (voice)

Rob Brydon

Prison Guard (voice)

Jeremy Dyson

Viking (voice)

Sean Hughes

Tapir (voice)

Natalie Imbruglia

Koala (voice)

Mark Gatiss

Viking (voice)

Steve Pemberton

Viking (voice)

Reece Shearsmith

Viking (voice)

Peter Peake