UNIT: Extinction is a brand new box set of adventures that take place in the world of the New Series of Doctor Who, with Jemma Redgrave reprising the role of Kate Stewart and Ingrid Oliver back as trusty scientist Osgood. The story sees the Unified Intelligence Taskforce defending the Earth from the might of the Nestene Consciousness and its army of plastic Autons.

Representing the aliens is Simon Devlin, the pioneer behind technology giant Futuretech, which holds the key to the Nestene's latest incursion. Devlin is played by Steve John Shepherd (This Life, EastEnders).

‘Steve was suggested to us by his agent just at the same moment as I was sending off an email to ask for him!’ says producer David Richardson. ‘He has such a magnificent, rich voice, and he makes Devlin a true power to be reckoned with.'

Devlin's schemes are handled by his ruthless security chief Jenna Gold, played by Karina Fernandez (Happy-Go-Lucky, Pride, Mr Turner).

‘Karina was originally recommended to us by her friend Anthony Howell when we were casting The Avengers,’ says David. ‘We’ve since asked for her many times since - she’s an astonishing talent.'

Waving a tentacle across the whole affair will be the Nestene Consciousness itself, once again played Big Finish Executive Producer Nicholas Briggs. The Consciousness has recreated itself after its last invasion attempt in 2005's Rose, and its new form will prove more than a match for UNIT.

Outside of the circle of villains, Tracy Wiles (Doctor Who: Masters of Earth) plays intrepid journalist Jacquie McGee, whose relentless pursuit of truth brings her straight to the front lines of the conflict; with her put-upon assistant Tim Stevens (Derek Carlyle) dragged along for the ride!

‘Since her first appearance for us in Masters of Earth, Tracy has become a real friend of Big Finish,’ says David. ‘We’d have her in everything if we could - but she was so perfect for the role of the determined Jacqui.'

With the remaining cast including Warren Brown, Ramon Tikaram and James Joyce, the stage is set for the blockbuster release of UNIT: Extinction. You can pre-order this November release today, as well as three follow up series – with special savings available as part of our UNIT Bundle.