UNIT is a science fiction audio series produced by Big Finish Productions focused on the fictional military organisation of the same name, who investigate extra terrestrial threat.
Members of UNIT include Kate Stewart, Sam Bishop and Josh Carter This section includes characters who will appear or have appeared in at least one season.
UNIT was relaunched in 2015 as UNIT: The New Series.
Each series is principally led by Jemma Redgrave and Ingrid Oliver reprising their roles of Kate Stewart and Petronella Osgood from the relaunched series of Doctor Who.