Coming in September, Lisa Bowerman returns as archaeologist and Time Lord companion Professor Bernice Summerfield, alongside David Warner as the Doctor in Doctor Who - The New Adventures of Bernice Summerfield: Ruler of the Universe.

Producer and writer James Goss reveals: "In this boxset, Bernice is very much the one having adventures, while the Doctor's chained to his desk - and what a desk it is. The last time the Doctor had a job it was as UNIT's scientific adviser - here's hoping that ruling the universe will go a bit better (spoilers: it doesn't). It's just like The West Wing - only with more ghosts, alien warlords, and ancient evils. We see the Doctor fighting an impossible task - one that drives a wedge between him and his only friend."

Doctor Who - The New Adventures of Bernice Summerfield: Ruler of the Universe can be pre-ordered for £20 on Download or £23 for the five-disc CD set. These prices will be held until the set's general release at the end of October, before becoming £25 and £30 respectively. A digital version is unlocked by any CD purchase as a Big Finish exclusive - best listened to via the free Big Finish app if you're using Apple or Android mobile devices.

Check out the other adventures for Bernice Summerfield at Big Finish, including e-books, Doctor Who novel adaptations, other New Adventures, and an entire range of solo adventures... David Warner's Doctor is just one of those in our what-if-something-had-been-different range of Doctor Who Unbound stories.

For a taste of Benny's first adventures with this Unbound Doctor, check out the trailer for last year's Doctor Who - The New Adventures of Bernice Summerfield 3: The Unbound Universe: