Mark Gatiss
Dr. William Bruffin
Jon Pertwee
Dr. Jeremiah O'Kane
Peter Davison
Patient One
Caroline John
Dr. Elizabeth Shaw
Sylvester McCoy
Dr. Colin Dove
Colin Baker
Peter Russell
Louise Jameson
Patricia Haggard
Sophie Aldred
Public Relations Officer
Linda Lusardi
Louise Bayliss
Jonathan Rigby
Cummings
Alexander Kirk
Orderly