Gugu was born in Oxford, England. After Graduating from RADA in 2004 she appeared in TV series Bad Girls, Bonekickers and Doctor Who. In 2013 She starred in Amma Asante's film Belle, playing the eponymous historical character, Dido.Followed by starring in Gina Prince-Bythewood's film Beyond The Lights
Letitia "Tish" Jones was a twenty-something PR executive who was propelled into jobs well above her experience level because Harold Saxon was trying to draw her sister Martha Jones— and thus the Tenth Doctor — into his trap. To her own surprise, and her sister's mild suspicion, she was put in charge of the public events that launched Richard Lazarus' de-ageing machine. She later worked in Saxon's 10 Downing Street press office. In both capacities, she had significant interaction with the Doctor.
Growing up, Tish developed a crush on a man who worked at an activity camp during a bad family holiday. (PROSE: The Pirate Loop)
She then became the head of PR for Richard Lazarus, who made himself look 40 years younger. After the experiment he seduced Tish on the roof of his lab, just as he was about to transform into a life force-draining monster.
Fortunately Martha and the Tenth Doctor arrived in time to save her. After everyone had evacuated the lab, he escaped to a cathedral where he chased Martha and Tish to the top of the tower and tried to kill them but the Doctor saved them by killing the mutated form of Lazarus with soundwaves. (TV: The Lazarus Experiment)
She then began to work for Harold Saxon when he became Prime Minister. The fact was he only hired her so that he could get to Martha.
Tish spotted Vivien Rook making her way for an interview with Lucy Saxon, despite Tish's protests that she was not to be disturbed, Vivien wafted her away.
One year later, Tish was working on the Valiant as a slave with her mum and dad. She and her family tried to break out and stop the Master but they failed at each attempt. She and the rest of her family were present when Martha was brought onto the Valiant, and the Doctor used the psychic power of the entire world to restore himself and defeat the Master.