Ncuti Gatwa

The Doctor

Millie Gibson

Ruby Sunday

Anita Dobson

Mrs Flood

Varada Sethu

Mundy Flynn,Belinda Chandra

Susan Twist

Comms Officer Gina Scalzi (uncredited),Tea Lady,Penny Pepper-Bean,.....

Michelle Greenidge

Carla Sunday

Angela Wynter

Cherry Sunday

Jemma Redgrave

Kate Lethbridge-Stewart

Alexander Devrient

Colonel Christofer Ibrahim

Nicholas Briggs

The Vlinx (voice),Robots (voice),Omega (voice)