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)
The Prime Ministers are listed in rough chronological order by their first term in office. Please note that this template only uses information from fictional sources. Real world information should not enter into this.