Ice Station Alpha was the fourth and final story in the audio anthology, Shutdown, produced by Big Finish Productions. It was written by Matt Fitton and featured Jemma Redgrave as Kate Stewart and Ingrid Oliver as Petronella Osgood.
But the UNIT team has been declared rogue, and ruthless military forces are in pursuit as they race across the globe. Kate calls Lieutenant Sam Bishop to their aid, while Josh and Osgood head out across the frozen Antarctic plains to try and prevent a disaster no-one else knows is coming.
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- Kate Stewart - Jemma Redgrave
- Osgood - Ingrid Oliver
- Captain Josh Carter - James Joyce
- Sam Bishop - Warren Brown
- Felicity Lyme - Alice Krige
- Sir Peter Latcham - Nigel Carrington
- Dokan/ Alien Leader - Dan Li
- Chiso/Tengobushi Assassins - Akira Koieyama
- Commander Bergem - Stephen Billington
- Major Disanto - Jot Davies
- The Tower of London is undergoing reconstruction. (AUDIO: The Battle of the Tower)
- Josh notes that they can't blame everything on Derren Brown. (TV: The Day of the Doctor)