Big Finish are a company who do officially licensed commercial audio dramas. They have been doing original Doctor Who dramas with Doctors 5-8 for nearly 16 years now, recently Tom Baker, John Hurt and David Tennant have joined the ranks of the Doctors. They also do radio adaptions of the lost first series of the Avengers (with a new Dr Keel and Steed), new Blake's 7 and Survivors amoung others.

If you like your Dr Who more old school you will love Big Finish