Big Finish

A British company that produces audio dramas, mostly Sci Fi. Not to be confused with Grand Finale.

Their productions include audios for:
 * Doctor Who. They use the original actors whenever possible, and guest voices including Anthony Head, Peter Jurasik, and David Tennant have turned up. A number of their writers were hired for the 2005 series recommission and (so far) three new series episodes have had more or less direct audio antecedents: Robert Shearman's episode "Dalek" was heavily adapted from his audio "Jubilee"; and "Rise of the Cybermen / The Age of Steel" draws one of its most powerful scenes (the Doctor speaks with a partially converted Cyberwoman who doesn't understand what has happened to her) from the audio "Spare Parts" (whose author, Marc Platt, got a story credit on the episodes).
 * Doctor Who Expanded Universe Spin Offs including:
 * Bernice Summerfield
 * Sarah Jane Smith
 * Gallifrey
 * Cyberman
 * UNIT
 * I, Davros
 * Dalek Empire (series 3 of which stars one David Tennant)
 * Jago & Litefoot
 * Iris Wildthyme
 * The Tomorrow People.
 * Sapphire and Steel
 * Dark Shadows
 * Judge Dredd and other 2000 AD strips
 * The Stargate Verse.
 * Sherlock Holmes
 * Warhammer 40,000
 * The Ciaphas Cain story "Dead in the Water"

They have also produced a radio adaptation of The Phantom of the Opera, based on the original novel.