Kate Stewart (Jemma Redgrave) is the Head of Scientific Research for the Unified Intelligence Taskforce; an international initiative to investigate and confront alien attacks across the planet Earth. The daughter of the legendary Brigadier Lethbridge-Stewart, Kate and her team battle against the Universe's greatest threats in a new series of five-disc boxsets.

The first new release from the world of the 2005 series, UNIT: The New Series begins with UNIT: Extinction; where Kate faces off against the terror of the Nestene Consciousness and its army of plastic Autons. Available November 2015.