Big Finish's first Doctor Who related audio line was based on the
character of Bernice Summerfield, originally created by
Paul Cornell as a
companion for the Doctor in the Virgin New Adventures novels.
While the first season were adaptations of novels, the second season
brought original audio drama, which were occasionally linked to
Big Finish's Bernice Summerfield novels,
such as The Glass Prison which featured a life changing event for
Benny.