Of course Season 11 wasn't just on the TV... in 1993 and 1996, the Doctor, Sarah and the Brig were reunited for two radio plays written by Barry Letts.
The first of these was The Paradise fo Death, concering the Doctor's involvement with the Parakon Corporation.
http://www.timelash.com/tardis/image...6-cassette.jpg
What do you think of this radio adventure?