Jo Grant (married name Jo Jones) joined UNIT straight from school - getting the job thanks for an influential uncle.
Once she'd completed her training, her first job
was assisting UNIT's mysterious Scientific Advisor - the Doctor. The Doctor and
Jo soon became firm friends. Together with UNIT they battled against alien
invasions and the Doctor's old enemy, the Master. Travelling through time and
space with the Doctor, Jo faced many monsters before she finally settled on
Earth - marrying scientist Cliff Jones and taking his surname.
Many years later, Jo was reunited with the
Doctor - and met Sarah Jane Smith and her friends - when she came to the
eleventh Doctor's funeral at a UNIT base under Mount Snowdon.
Now a dedicated ecology campaigner and protester, Jo had her grandson Santiago with her - who was born in a caravan at the
foothills of the Andes mountains.