Jimmy Savile
Jimmy Savile (31 October 1926-29 October 2011) was the host of Jim'll Fix It, and thus a participant in A Fix with Sontarans.
He was one of the BBC's main personalities — particularly popular in the 1970s and 1980s. In the autumn of 2012, a year after his death, ITV journalists broke the news that he was a serial paedophile, and had abused his position as a popular BBC television personality throughout his long career.[1]
The BBC's response to this revelation, as well as a subsequent act of incompetent journalism related to the Saville investigation, led directly to the resignation of the newly-installed Director-General, George Entwistle.