Main Range #243 - the Quantum Possibility Engine, CD/Spoken Word by Adams, Guy, ISBN 1781788359, ISBN-13 9781781788356, Like New Used, Free P&P in the UK

Big Finish have been producing Doctor Who audios since 1999, starring Tom Baker, Peter Davison, Colin Baker, Sylvester McCoy, Paul McGann, David Tennant and John Hurt.