Amongst the controllers most significant to the history of Doctor Who have been: * Donald Baverstock, controller between 1963 and 1965, the person who ordered Sydney Newman to create a Saturday evening programme — one that eventually became Doctor Who. * Bryan Cowgill, the BBC One controller from 1973-1977, who would have been ultimately responsible for the hiring of Philip Hinchcliffe and other key personnel who together produced the most consistently highest-rated period of classic Doctor Who. * Alan Hart, the controller during the twentieth anniversary year, who worked with John Nathan-Turner to find ways to have a twentieth anniversary special in November 1983 without removing Peter Davison from the very popular Sink or Swim cast. * Michael Grade, who "rested" the program