Zoe, who starred as Anya Raczynski in the 2008 BBC reboot of Survivors and has also appeared in Demons, Mr Selfridge and The Martian Chronicles, will portray government official Evelyn Piper - who listeners will first encounter in a flashback to the beginnings of the plague that decimated the globe.

It begins with just a few people falling ill. Another flu virus that spreads around the globe. And then the reports begin that people are dying…

When most of the world's population is wiped out, a handful of survivors are left to pick up the pieces.

Cities become graveyards. Technology becomes largely obsolete. Mankind must start again…

Based on Terry Nation's cult post-apocalyptic drama, Survivors: Series 4 presents a quartet of new stories from the world of the original television programme.

After the harrowing events of Survivors: Series 3, the new series finds Greg (Ian McCulloch) and Jenny (Lucy Fleming) out on the road, reaching out to other survivors on behalf of the Whitecross Community. Their journey will bring them back into contact with Jackie (Louise Jameson) and Molly (Fiona Sheehan) – and a new community headed by Theo, an inspirational leader played by Ramon Tikaram (UNIT: The New Series, The Prisoner, Happy Valley).

'I’m delighted that the first three series met with such acclaim,’ says producer David Richardson, 'and I’m very excited by the new story lines that script editor Matt Fitton and his team of writers have been spinning. There are plenty of shocking twists and turns yet to come…'

Survivors: Series 4 comprises four full-cast dramas, and also features bonus behind-the-scenes interviews with cast and crew.

4.1 The Old Ways by Ken Bentley

The Government has plans for a national state of emergency. But when Evelyn Piper and her colleagues shelter in the Tartarus bunker, they discover no amount of planning can prepare for the reality of the Death...

4.2 For the Good of the Cause by Louise Jameson

One old friend calls on Greg and Jenny to look after another. Together, they visit a utopian community where the inspirational Theo seems to have founded the perfect way of life...

4.3 Collision by Christopher Hatherall

When the old world collides with the new, casualties are unavoidable. While Greg and Theo work together for the future, Jenny tries to save lives - with the help of a troubled young man called Michael...

4.4 Forgive and Forget by Matt Fitton

As long-buried crimes surface, resentment and recrimination threaten to destroy the peace of the Foundation. Jenny, Jackie and Molly have their own trials to bear, and Greg confronts the truth of this new world head on. For some, nothing will ever be the same…

Survivors: Series 4 is due for release in June 2016, with Series 5 following in November 2016. Both series can be pre-ordered today for just £25 each on CD, or £20 to download. And remember, when you choose to buy this release on CD directly from Big Finish, you will also unlock instant access to a digital copy for download.

The first three series are still available to order today – with the opening episode Survivors: Revelation available to download for free. An audiobook reading of Terry Nation's 1976 novelisation is also available, performed by original series cast member Carolyn Seymour.