Jacqui McGee

 was a journalist. She wanted an interview with Simon Devlin but couldn't get one. She impersonated an old acquaintance of Kate Stewart and knew who she was. She asked how quick the technology would be distributed. She wanted to know what UNIT was. She observed an operation and Kate had her memory wiped. (AUDIO: Vanguard) She told Kate about deaths occurring when people try to dismantle the 3d printers. (AUDIO: Earthfall) She then tried to expose Devlin Futuretech and when that failed she tried to go undercover. Devlin then tried to kill her by Josh Carter saved her. (AUDIO: Bridgehead) She was brought the Tower of London UNIT base for her protection and stayed with Osgood. (AUDIO: Armageddon)