Derek Calder played several roles on Doctor Who, only one of which he was ever credited.
Credited roles
Uncredited roles
- The Romans - Guard & Gladiator (DWM 251)
- The Highlanders - Extra & English Soldier (DWM 292)
- The Underwater Menace - Fish Person (DWM 209)
- The War Games - Alien technician, British Soldier, Alien Roman Officer, Alien Confederate Officer & Time Lord Technician (DWM 232)