David Collings

David Collings appeared in several Doctor Who stories: as Vorus in Revenge of the Cybermen, Poul in The Robots of Death, and Mawdryn in Mawdryn Undead.

He also played an alternative incarnation of the Doctor in the Big Finish Productions audio drama Full Fathom Five and would return to his role of Poul, now Paulus, in Magic Bullet Productions' series of Kaldor City audios.

Outside of Doctor Who, he appeared in eight episodes of the television series Sapphire & Steel as the character Silver, a role he reprised in the Big Finish Productions Sapphire & Steel audio series. He also appeared in the final episode of Blake's 7 as Deva.

Doctor Who

 * Revenge of the Cybermen - Vorus
 * The Robots of Death - Poul
 * Mawdryn Undead - Mawdryn

Doctor Who

 * White Ghosts

Doctor Who Unbound

 * Full Fathom Five - The Doctor

Jago and Litefoot

 * The Similarity Engine - Gabriel Sanders
 * Litefoot and Sanders - Gabriel Sanders
 * The Necropolis Express - Gabriel Sanders
 * The Theatre of Dreams - Gabriel Sanders
 * The Ruthven Inheritance - Gabriel Sanders

The Fourth Doctor adventures

 * The King of Sontar - Rosato

Kaldor City

 * Hidden Persuaders - Paullus
 * Taren Capel - Paullus
 * Checkmate - Paullus