Gia Kelly

Gia Kelly was manager of T-Mat Earth Control in London.

Biography
When the T-Mat malfunctioned, Kelly travelled with Julian Radnor to meet Daniel Eldred. They tried to persuade him to build a rocket so that they could send technicians to the Moon to repair the T-Mat. With the help of the Second Doctor, Zoe Heriot, and Jamie McCrimmon, the rocket was built and launched. Kelly lost radio contact with the rocket shortly after.

The T-Mat to London became operational again and Kelly used it to travel to the Moon with a team of technicians. Kelly and her team were unaware that Slaar and his Ice Warriors had invaded the base. Fewsham, a prisoner of the Ice Warriors, told Kelly the accident was down to Osgood, the former head technician, having gone mad.

Kelly and her team repaired the T-Mat and the Ice Warriors attacked them. Kelly was the only survivor. She escaped and rendezvoused with the Doctor, Zoe, Jamie, and Phipps. Kelly repaired a device that ran on solar power and used it to kill an Ice Warrior. Fewsham repaired the T-Mat, allowing Kelly and the others to return to Earth.

Once there, Kelly viewed Fewsham's secret filming of the Ice Warrior plan. Using this information, she developed a signal on the same frequency as that of the Ice Warriors. When deployed on a satellite, it led the Ice Warrior fleet into the Suns orbit where they died.

Despite these events Kelly still saw no need to rely on any other form of transport other than T-Mat. (DW: The Seeds of Death)

The Eleventh Doctor was fond of Kelly's ponytail and catsuit, even contemplating wearing a similar outfit. (REF: The Brilliant Book 2012)