David O'Mahony

 voiced Petroz and the Conservitors in The Third Doctor Adventures audio story The Conservitors and directed several other stories for Big Finish Productions.

The Diary of River Song

 * The Orphan Quartet
 * The Excise Men
 * Harvest of the Krotons
 * Dead Man Talking
 * The Wife of River Song

Torchwood

 * Thirst Trap

Among Us

 * Among Us 3
 * How I Conquered the World
 * Doomscroll
 * Heistland
 * The Apocalypse Starts at 6 PM

The Third Doctor Adventures

 * The Conservitors - Petroz / the Conservitors