Ncuti Gatwa as The Doctor

Varada Sethu as Belinda Chandra

Millie Gibson as Ruby Sunday

Archie Panjabi as The Rani

Atilla Akinci as Otto Zufall

Leni Adams as Violett Zufall

Sienna-Robyn Mavanga-Phipps as Poppy

Jonah Hauer-King as Conrad Clark

Bonnie Langford as Melanie Bush

Ruth Madeley as Shirley Bingham

Jemma Redgrave as Kate Lethbridge-Stewart

Susan Twist as Susan Triad

Alexander Devrient as Colonel Christofer Ibrahim

Nila Aalia as Lakshmi Chandra

Josephine Welcome as Devika Babu

Anita Dobson as Mrs Flood

Hermon Berhane as Val Balham

Yasmin Finney as Rose Noble

Sam Lawton as Winnie Petheridge

Joshua J. Parker as Brian Dale

Michelle Greenidge as Carla Sunday

Angela Wynter as Cherry Sunday

Carole Ann Ford as Susan Foreman

Jonathan Groff as Rogue

Steph Bailey-Scott as Camp Resident

Daniel Mahoney as Camp Resident

Isla Moody as Seeker

Megan Davies as Seeker

Rosie Gibson as Seeker

Alke Schwarz as Seeker

Callum Owen as Drone Guard

Harrison Pittard as Drone Guard

Adam Bentley as Drone Guard

Matthew Doman as Drone Guard

Jodie Whittaker as The Doctor

Billie Piper as

Stephanie de Whalley as Anita Benn

Aidan Cook as The Vlinx

Nicholas Briggs as Omega (voice)

Kate O'Mara as The Rani (archive footage) (uncredited)

William Hartnell as Dr. Who (archive footage) (uncredited)

Patrick Troughton as Dr. Who (archive footage) (uncredited)

Jon Pertwee as Dr. Who (archive footage) (uncredited)

Tom Baker as Doctor Who (archive footage) (uncredited)

Peter Davison as The Doctor (archive footage) (uncredited)

Colin Baker as The Doctor (archive footage) (uncredited)

Sylvester McCoy as The Doctor (archive footage) (uncredited)

Paul McGann as The Doctor (archive footage) (uncredited)

John Hurt as The Doctor (archive footage) (uncredited)

Christopher Eccleston as Doctor Who (archive footage) (uncredited)

David Tennant as The Doctor / The Doctor (archive footage) (uncredited)

Matt Smith as The Doctor (archive footage) (uncredited)

Peter Capaldi as The Doctor (archive footage) (uncredited)

Jo Martin as The Doctor (archive footage) (uncredited)