Halloran (Sphere of Freedom)

Captain Halloran was a member of the British Army. He encountered the Ninth Doctor in 1959 London after being caught up in the time eddies created by Audrey Mohinson.

Halloran was mortified at the killing of 300 innocent civilians by time-displaced Roman Centurions and initially planned on shooting them, although he believed it to be the work of Russians until the Doctor, pretending to be from the War Office, intervened. Together, they and Lieutenant Farraday talked to the Roman Marcus Aurelius Gallius but failed to make much progress. The Doctor eventually left in his TARDIS to stop the time eddies. (AUDIO: Sphere of Freedom)

The Doctor, Nova, and Farraday later rescued Halloran and Marcus while they were trying to destroy the eddies, and the group travelled to the Sphere of Freedom to stop Audrey and the Ravagers. However, when the Doctor was imprisoned, the group had to work on their own to create a distraction and allow Nova to destroy the time particles. However, in doing so, the time eddies went out of control and captured the Doctor, and Halloran was forced to watch as the Ravagers started destroying the universe.

When the Doctor changed the timeline to stop the Ravagers for good at an earlier point in time, the retroactive fixes to time meant that none of the events with the Romans in London had ever happened. (AUDIO: Food Fight)