Principal Private Secretary to the Prime Minister appointed by Theresa May on 10 May 2017. During Tony Blair's administration, he modified the law under which the Civil Service operated to create the role of Downing Street Chief of Staff, which though held by a political advisor outranked the Principal Private Secretary. When Gordon Brown ascended to office, he reversed the change to the Civil Service law. When David Cameron became Prime Minister, he promoted the then-PPS to a new post of "Permanent Secretary, Downing Street", a position which took over heading the Prime Minister's Office. In 2012, the postholder, Jeremy Heywood, was appointed as Cabinet Secretary, this
Law for the Restoration of the Professional Civil Service jobs. Moreover, civil servants should be let go if they had started their jobs after 1918 and were now unable to demonstrate that they had acquired all the training necessary for their careers. These people were called "membership book officials (Parteibuch-Beamte)" in the language of National Socialist propaganda. According to § 3 (1) of the "First Ordinace for the accomplishment of the Law for the Restoration of the Professional Civil Service, officials without "Aryan" heritage were those who had even just one Jewish grandparent (in contrast to the way the Nuremberg Laws of 1935 regarded such people, as "quarter-Jews ("Vierteljuden")).