Erisa Magambo

Captain Erisa Magambo was a female officer working with UNIT in the early 21st century.

History
In April 2009 she and UNIT were called out on site after the Number 200 Bus had vanished into a wormhole. She, along with Malcolm Taylor, managed to get in contact with the Doctor. She was very excited by this as she, like everyone else in UNIT, wanted to meet the Doctor, even knowing that it would only happen while dealing with a major threat. When the Doctor warned UNIT that an alien swarm was intent on coming to Earth via the wormhole, she ordered Malcolm to close it even though the Doctor and the bus passengers would be trapped on the other side. When Malcolm refused, she held him at gunpoint and insisted he close it due to the danger it posed to Earth.

However, the Doctor got the bus back to safety and Malcolm closed the wormhole. Three of the Swarm gained access to Earth, prompting a code red circumstance. Magambo and her men fired on the aliens and, using a mounted rocket launcher, dispatched all three. She later thanked the Doctor and gave him his TARDIS back after UNIT found it in Buckingham Palace Garden. (DW: Planet of the Dead)

Later that same year, she asks the recently married, Martha Smith-Jones to contact the Doctor to investigate mysterious living trees in Greenwich park. However during the investigation, she choses a scenario proposed by the Advocate, which will cause the death of millions to save billions rather than listening to the Doctor. Fortunately the Doctor is able to intervene and stop their insane plan, and after he furiously confronts Magambo, referring to both her and UNIT as "typical military". She angrily tells him to leave Earth, and not come back until he has changed his face again, because his current one has worn out it's welcome. Her actions in this affair cause both the Doctor and Martha to turn their backs on her. (IDW: Don't Step on the Grass)

In November 2009, Magambo was responsible for contacting Jack Harkness to discover the cause of the time fissure occurring in Cardiff. (TWN: The Undertaker's Gift)

In 2013, Magambo was in charge of the clean-up operation after the Nestene invasion of Hyperville. (NSA: Autonomy)

Alternate Timeline
In an alternate timeline, Captain Magambo was in charge of a special division of UNIT, most likely the sole surviving British division in that world. She was part of the operation to remove the Time Beetle on Donna Noble's back, and with the help of Rose Tyler, she sent Donna back in time to prevent the events which would result in the Doctor's death and worldwide disasters. (DW: Turn Left)