Peter Capaldi as The Doctor

Jenna Coleman as Clara Oswald

Michelle Gomez as Missy

Samuel Anderson as Danny Pink

Chris Addison as Seb

Jemma Redgrave as Kate Lethbridge-Stewart

Ingrid Oliver as Osgood

Jeremiah Krage as Cyberman

Nicholas Briggs as Cyberman (voice)

Joan Blackham as Woman

Sheila Reid as Gran

Andrew Leung as Dr Chang

Bradley Ford as Fleming

Antonio Bourouphael as Boy

Nigel Betts as Mr. Armitage

Sanjeev Bhaskar as Colonel Ahmed

Shane Keogh-Grenade as Teenage Boy

Katie Bignell as Teenage Girl

James Pearse as Graham

Nick Frost as Santa Claus