Cast: Jemma Redgrave (Kate Stewart), Ingrid Oliver (Osgood)
 
Series 1
1.1 Vanguard by Matt Fitton
Crashed UFOs, strange meteors, a giant lizard in the Severn - all business as usual for UNIT
1.2 Earthfall by Andrew Smith
In Mongolia, Sam is joined by Osgood and they set off into the Gobi. But there are Autons in this desert.
1.3 Bridgehead by Andrew Smith
As the Nestenes progress their plans, Kate becomes a target.
1.4 Armageddon by Matt Fitton
As Autons swarm across the planet, the human race faces its darkest hour.
 
Series 2
2.1 Power Cell by Matt Fitton
what are they doing in the London Docklands?
2.2 Death in Geneva by Andrew Smith
With Tengobushi assassins on their tail, Kate and Osgood retreat to UNIT Command in Geneva. 
2.3 The Battle of the Tower by Andrew Smith
As London sleeps, an alien horde rises from the shadows. 
2.4 Ice Station Alpha by Matt Fitton
Caught between human greed and an unstoppable alien power, Kate Stewart leads her forces on one last mission to the Antarctic. 
 
Series 3
Decades after their defeat by the Eleventh Doctor, the Silence prepare to rise against humanity. Only Kate Stewart and her team stand in their way, but how can UNIT fight an enemy that no one knows is there? Written By: Matt Fitton, John Dorney
 
Series 4
4.1 Call to Arms by Matt Fitton
Mike Yates braves a stormy night in the Lakes 
4.2 Tidal Wave by Guy Adams
Kate Stewart calls in an expert and Soon, Jo Jones is bound for ‘Project Charybdis’ in the South Atlantic, along with an awestruck Osgood. But beneath the seabed an army is sleeping – an army of Sea Devils!
4.3 Retrieval by Guy Adams
As the Earth’s primeval rulers reclaim their birthright, UNIT must stand against them
 
Series 5 (5 discs)
The Dalek Transaction by Matt Fitton
Captive, desperate and alone. That’s when a Dalek is at its most dangerous.
Invocation by Roy Gill
It’s Hallowe’en, Ghosts from the past are haunting UNIT, and now they threaten the whole world…
The Sontaran Project by Andrew Smith
On a routine reconnaissance mission, Colonel Shindi finds more than he bargains for in the Forest of Ardennes.
False Negative by John Dorney
When a strange travel capsule is activated in UNIT’s laboratory, Osgood and Josh find themselves in a whole new world of trouble. 
 
Series 6
Kate Stewart and her UNIT team investigate and confront alien attacks on the planet Earth in this new 5 disc boxset:
6.1 Game Theory by Matt Fitton
6.2 Telepresence by Guy Adams
6.3 Code Silver by Guy Adams
6.4 Master of Worlds by Matt Fitton
 
Series 8
8.1 This Sleep of Death by Jonathan Morris
Kate has no choice but to return to Abbey Marston once more, to disturb the sleep of death. But the Static are waiting…
8.2 Tempest by Lisa McMullin
Kate Stewart visits a deep-sea oil-rig where strange things are afoot. A tempest is coming, and it could be disaster for the entire world.
8.3 The Power of River Song part 1 by Guy Adams
Osgood and Lieutenant Bishop investigate mysterious disappearances
8.4 The Power of River Song part 2 by Guy Adams
There’s a dead body in the power station. River Song is the prime suspect. And Kate is most concerned by the identity of the victim.