Dr Who may have been successfully resurrected on television in 2005, but it had already reappeared six years earlier in the shape of audio plays released on CD, a format that has been thriving ever since. Big Finish Productions has created more than 180 plays featuring “classic doctors”, as the pre-2005 Doctors are known. Due to the company’s agreement with the BBC it cannot reveal sales figures (or feature post-2005 Doctors), but a permanent staff of nine, and the sheer scale of the operation, suggest business is thriving.