Doctor Who: UNIT could battle the Zygons again as Jemma Redgrave is confirmed for 50th anniversary

The Brig's daughter could face her father's old foes following the news that both she and the aliens will appear in the special episode

Kate Stewart, head of scientific research at the United Nations Intelligence Taskforce (UNIT), could be about to follow in the footsteps of her celebrated father Brigadier Alistair Lethbridge-Stewart by taking on old enemy the Zygons in the Doctor Who 50th anniversary special.


Less than a week after revealing that the Doctor’s old enemies are returning for the episode, the BBC has announced that Jemma Redgrave, who plays Kate Stewart, will also star. Unless the Zygons have radically altered their attitude to mankind, she could find herself helping the Doctor battle his old foes. Whether that would take place on Earth, and alongside the rest of UNIT, remains to be seen, but a rematch would certainly delight many classic Who fans.

The Brig led UNIT against the alien invaders in Fourth Doctor serial Terror of the Zygons, while his daughter Kate was introduced after his death, in series seven episode The Power of Three.

Despite that being her first meeting with the Doctor she shares her father’s belief in the Time Lord, and his loyalty to him. However, as a scientist Kate’s approach is less militaristic than the Brig’s once was – something she learned from him in his later years. “Science leads,” Kate recalls her dad telling her. “He said he’d learnt that from an old friend…”


Filming on the Doctor Who 50th anniversary special is due to start this month and is expected to air in November, half a century to the month after the first ever episode was broadcast.