Doctor Who: Unbound

Doctor Who: Unbound is a series of audio plays produced by BBC Radio 4, that are part of the Doctor Who franchise. Taking place outside the continuity of the main series, the plays primarily showcase a series of "What if...?" scenarios, and cast new actors in the role of the Doctor.

Initially intended as a one-off series to celebrate the show's 40th anniversary, it's success amongst fans led to the tradition of a new series being broadcast on every fifth subsequent anniversary year.

Cast
Doctors: Companions