Clive Hayward

 voiced several characters for Big Finish Productions.

The Third Doctor Adventures

 * Poison of the Daleks - Brock / Roboman / Frasi

Companion Chronicles

 * Daybreak - The Judge / Markus

The Diary of River Song

 * Barrister to the Stars - Emperor of Eternal Abundance / Duke of Ferrox / Last of the Unnatural Children
 * Carnival of Angels - Marty Stone