Jo Patterson was the Technology Secretary and later the Prime Minister of the United Kingdom.
She tipped off Jack Robertson about the Recon Dalek's casing being moved, enabling him to steal it. From this he was able to develop the Defence Drones, agreeing with her to have them built in her constituency. Shortly after becoming Prime Minister she unveiled the Defence Drones around the United Kingdom, including some on Downing Street. However, when the cloned Dalek teleported new Daleks into the drones she was among those exterminated, outside 10 Downing Street. (TV: Revolution of the Daleks)