A blank cell in the table indicates that the information is unknown.
Columns are in chronological order from 1978–2005, except for the two German radio series (1981 and 1990–1991).
Roger Blake: ♠[14] Sandra Dickinson as "Tricia McMillan" Sandra Dickinson as "Tricia McMillan" Stephen Moore (voice) ♦ "The Rainbow" production ♥ Science Fiction Theatre of Liverpool production ♠ Theatr Clwyd Production A blank cell in the table indicates that the information is unknown.
"N/A" indicates that the role in question does not exist for that version of the story.
"Dust cloud" voice: Leslie Phillips Charlotte Green as herself Peter Donaldson as himself Sir Patrick Moore as himself