- Audio commentary for the DVD release of "Doctor Who: The Aztecs (1964)" with William Russell and Carole Ann Ford. "The Aztecs" consisted of the episodes: The Temple of Evil (1964), The Warriors of Death (1964), The Bride of Sacrifice (1964) and The Day of Darkness (1964).
- Wrote the afterword for the book "A Take on British TV Drama" (Scarecrow Press, 2004)
- Provided a commentary for the Doctor Who DVD "The Dalek Invasion of Earth".
- Provided a commentary for the Doctor Who DVD "The Web Planet".
- Provided a commentary for the Doctor Who DVD "The Time Meddler".
- Provided a commentary for the Doctor Who DVD "An Unearthly Child".
- Provided a commentary for the Doctor Who DVD "The Daleks".
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