President of Great Britain (Rise of the Cybermen)
From Tardis Wiki, the free Doctor Who reference
The President of Great Britain on a parallel Earth in 2007 was friends with Peter and Jackie Tyler.
John Lumic hoped to gain government approval for cyber-conversion and unveiled him this concept. The meeting didn't flourish in Lumic's credence however, as the President made it abundantly clear he would not allow such a repugnant thing to change humanity. Affronted at receiving no approbation, Lumic had him murdered by one of many Cybermen at Jackie Tyler's birthday party. (TV: Rise of the Cybermen)
He was succeeded by Harriet Jones, who remained in office into 2010. (TV: Doomsday)