The guardians of the Solar System – agents Anya Kingdom (Jane Slavin), Mark Seven (Joe Sims), and Sola Akinyemi (Madeline Appiah) – return for three thrilling original adventures. 

Their most dangerous enemies, the Daleks (Nicholas Briggs), are back, in greater numbers than ever, exterminating their way across the cosmos. And when she becomes their prisoner, Anya encounters a man she used to know and love – her uncle Bret Vyon. 

This Space Security Service agent was originally played by Nicholas Courtney in 1965-66 Doctor Who TV serial The Daleks’ Master Plan, and here is voiced by Jon Culshaw. Anya knows her uncle is dead, so who is this living, breathing Bret Vyon? 

The Worlds of Doctor Who – Space Security Service: Bret Vyon Lives! is now available to pre-order for just £19.99 (as a digital download to own), exclusively here. 

The three exciting interplanetary adventures are: 

The Man Inside by Simon Guerrier 

Anya Kingdom is a prisoner of the Daleks on a very peculiar space station orbiting a very peculiar star. The Daleks don’t want to kill Anya; they want to break her down psychologically.  

One way to do that is to lock her in a cell with someone Anya knows is a fake. Whoever, whatever, this man really is, he cannot be her beloved uncle. Bret Vyon is dead, end of story. 

But if Anya is to survive, she will need his help… 

The Wages of Death by David Llewellyn 

Furiosa 237 is a remote world in the hinterlands of the galaxy. Anya and Mark teleport in and quickly take jobs on a cargo shop. They’re undercover – on an urgent, secret mission. 

Their task is to locate a device called a Progenitor, then drop it into the nearest black hole — and quickly, before it can hatch. 

But at least one person on board is determined to save the Progenitor and unleash its deadly contents: a whole army of Daleks. 

The Sky is for Sale by James Kettle 

A huge satellite mines the atmosphere of Saturn. Following a number of threats, agent Sola Akinyemi of the Space Security Service is on board, tasked with keeping the workers and their families safe. 

Meanwhile, Anya Kingdom is at Triple-S headquarters, working to expose and eradicate corruption in the service. But just as she’s making progress, HQ is attacked. And then the mining satellite is invaded – by a different hostile force! 

In the desperate battle that follows, Anya and Sola will have to make impossible choices. Who can they really trust? And what horrors are they willing to sanction if it means defeating the Daleks? 

The guest cast of Space Security Service: Bret Vyon Lives! includes Shobu Kapoor (We Are Lady Parts), Forbes Masson (The High Life), and Louiza Patikas (The Archers), plus further names yet to be announced. 

Producer and writer Simon Guerrier said: “Anya Kingdom faces her greatest challenge yet as a prisoner of the Daleks. But help is at hand from the least expected person – Bret Vyon, traitor of the SSS and Anya's long-dead uncle! With this second batch of adventures, we really wanted to raise the stakes. With the Daleks on the warpath, Earth's future depends on alliances – but who can Anya really trust? 

“What a delight it’s been working on this set of three thrilling adventures steeped in the rich lore that Terry Nation created all those years ago. I’ve loved every stage of collaboration with John Dorney and Barnaby Kay on this compelling, fast-paced series. 

“The one I've written is a particular treat. An age ago, I worked on stories featuring SSS agent Sara Kingdom as played by the brilliant Jean Marsh. So it's been a particular pleasure to revisit Sara’s brother Bret and tell something of his side of their fateful story. And then there's what David and James have written to follow... Oh, just you wait!” 

Big Finish listeners can save money by pre-ordering Bret Vyon Lives! in a multibuy bundle with the previous volume of Space Security Service (June 2025’s The Voord in London) for just £38 (download to own). 

All the above prices (including pre-order and multibuy bundle discounts) are fixed for a limited time only and guaranteed no later than 28 February 2026.