Ewan Bailey

Ewan Bailey played an Alien in the Doctor Who Christmas special Voyage of the Damned and voiced several characters in various audio stories produced by Big Finish Productions.

Doom Coalition

 * The Galileo Trap - Count Licori
 * The Satanic Mill - Father Locke and the Orbs

Fourth Doctor Adventures

 * The Sinestran Kill - Hugo Blake

Philip Hinchcliffe Presents

 * The Helm of Awe - Davy McTavit

Jago & Litefoot

 * The Case of the Missing Gasogene - McCallum and Grayson
 * The Year of the Bat - Sergeant Quick Senior
 * The Mourning After - a priest

The Early Adventures

 * The Morton Legacy - Blazzard and Copeland

The New Counter-Measures

 * The Ship of the Sleepwalkers - Dimitri Papkin

The Diary of River Song

 * Kings of Infinite Space - Discordia computer / Evotech Kronin / Wendell / Rattus / Cab / Karsus Prime

Lady Christina

 * Death on the Mile - Sir Edward Scott Cameron/Slitheen Edward/Biggs

Big Finish Torchwood

 * Aliens Among Us 2 - Duncan