Harriet Jones (Pete's World)

Harriet Jones was the President of Great Britain in Pete's World by 2010.

When told this, the Tenth Doctor warned Pete Tyler to "keep an eye on her". (TV: Doomsday)

She combined Torchwood and the Preachers into UNIT. (AUDIO: The Siege of Big Ben)

She made Jackie Tyler sign the Official Secrets Act after an alien invasion. (AUDIO: Flight Into Hull!)