Christopher Naylor

 was a voice actor who portrayed several roles in Big Finish audio stories, notably recreating the role of companion Harry Sullivan.

He also painted the cover for The First Doctor Adventures audio anthology The Demon Song.

Acting Credits
As Harry Sullivan

The Lost Stories

 * Return of the Cybermen
 * Daleks! Genesis of Terror
 * The Ark

The Seventh Doctor Adventures

 * Sullivan and Cross - AWOL
 * London Orbital
 * Scream of the Daleks
 * Far From Home
 * Operation Dusk
 * Naomi's Ark

The Third Doctor Adventures

 * Kaleidoscope

UNIT: Nemesis

 * Fire and Ice
 * The Curator's Gambit
 * The Man from Gallifrey
 * Power of the Dominators
 * One Way or Another
 * True Nemesis

Other Roles

Doctor Who Main Range

 * Black Thursday - James Hudd
 * The Kamelion Empire - Alternative Kamelion / Chaos Soldier

The Lost Stories

 * The Doomsday Contract - Villager

The Fourth Doctor Adventures

 * The Perfect Prisoners - Malpha / Sentreal / Trooper / Worker
 * Chase the Night - Bolan
 * The Tribulations of Thadeus Nook - Krillian / Cop / Halder
 * Blood of the Time Lords - Cohort 2 / Honourable Loric
 * Shellshock - Captain Max Beck / Captain Starling / Private Müller

The Eighth Doctor: The Time War

 * The Lords of Terror - Guard
 * Planet of the Ogrons - Ogron

The Tenth Doctor Adventures

 * One Mile Down - Pickus

The First Doctor Adventures

 * The Great White Hurricane - Policeman / Man with Ladder / Gang Member / Henry
 * The Barbarians and the Samurai - Captain Hamilton

Doctor Who Unbound

 * Dust Devil - Harry Sullivan
 * The Key To Key To Time - Harry Sullivan

The Diary of River Song

 * Whodunnit? - Lord Simon Whist / Captain Bartholomew / Discordia Underling
 * The Lifeboat and the Deathboat - Number Two / Computer / James

UNIT: Nemesis

 * Fire and Ice - Abiathar
 * Traitors' Gate - Vulpreen
 * The Destiny Labyrinth - Vulpreen

The First Doctor Adventures

 * The Demon Song