Peter Capaldi

The Doctor

Jenna Coleman

Clara Oswald

Michelle Gomez

Missy

Samuel Anderson

Danny Pink

Chris Addison

Seb

Jemma Redgrave

Kate Lethbridge-Stewart

Ingrid Oliver

Osgood

Jeremiah Krage

Cyberman

Nicholas Briggs

Cyberman (voice)

Joan Blackham

Woman

Sheila Reid

Gran

Andrew Leung

Dr Chang

Bradley Ford

Fleming

Antonio Bourouphael

Boy

Nigel Betts

Mr. Armitage

Sanjeev Bhaskar

Colonel Ahmed

Shane Keogh-Grenade

Teenage Boy

Katie Bignell

Teenage Girl

James Pearse

Graham

Nick Frost

Santa Claus