Peter Capaldi The Doctor Actor Jenna Coleman Clara Oswald Actor Maisie Williams Ashildr Guest Star Michelle Gomez Missy Guest Star Colin McFarlane Moran Guest Star Ingrid Oliver Osgood Guest Star Morven Christie O'Donnell Guest Star Julian Bleach Davros Guest Star Elaine Tan Nagata Guest Star Jemma Redgrave Kate Guest Star Arsher Ali Bennett Guest Star Jaye Griffiths Jac Guest Star Steven Robertson Pritchard Guest Star Barnaby Kay Heidi Guest Star Caroline Boulton Habrian Woman Guest Star Paul Kaye Prentis Guest Star Tom Wilton Zygon Guest Star Jack Parker Zygon Guest Star Kelly Hunter Shadow Architect Guest Star Nicholas Briggs Dalek Guest Voice Steven Moffat Executive Producer, Writer Rachel Talalay Director Richard Curtis Writer Chris Chibnall Writer Toby Whithouse Writer Mark Gatiss Writer Simon Nye Writer