Sam Clemens

Sam Clemens, also credited as Samuel Clemens, was a voice actor and director for Big Finish Productions.

Doctor Who Main Range

 * Blue Forgotten Planet - James Atherton
 * Lurkers at Sunlight's Edge - Slade

The Fourth Doctor Adventures

 * The Planet of Witches - Yggra / Tiresias / Familiars

The Third Doctor Adventures

 * Operation: Hellfire - Hegley

The Eleventh Doctor Chronicles

 * The Yearn - Entity / Yearn

UNIT

 * Dominion - Wyland-Jones

The Diary of River Song

 * The Web of Time - Corporal Buscombe / The Intelligence

Gallifrey: Time War
As Mantus
 * Havoc
 * Partisans
 * Collateral
 * Assassins
 * Deception
 * Homecoming

Gallifrey: War Room

 * The First Days of Phaidon - Sentient Storm

Torchwood

 * War Chest - Guard

Doctor Who Main Range

 * The Monsters of Gokroth
 * The Moons of Vulpana
 * An Alien Werewolf in London
 * The Psychic Circus
 * Subterfuge
 * The Flying Dutchman / Displaced
 * The Grey Man of the Mountain

The Fifth Doctor Adventures

 * Nightmare of the Daleks

The Seventh Doctor Adventures

 * Silver and Ice
 * Bad Day in Tinseltown
 * The Ribos Operation

The Third Doctor Adventures

 * Operation: Hellfire - Winston Churchill's lines only. (BFX: Operation: Hellfire)

Gallifrey

 * Allegiance
 * The Last Days of Freme
 * The Passenger
 * Collateral Victim
 * The First Days of Phaidon

Missy

 * Series Two
 * The Lumiat (with Ken Bentley)
 * Brimstone and Terror (with Ken Bentley)
 * Treason and Plot (with Ken Bentley)
 * Too Many Masters (with Ken Bentley)

Torchwood

 * War Chest