The Burton story is quite interesting (from wikipedia):
In January 2009, with Burton 13 points clear at the top of the table, Clough left the club to become the manager of Derby County, with Roy McFarland installed as caretaker manager until the end of the season. Despite this managerial change, Burton went on to set a league record for the most consecutive wins, and in February 2009, when the team was 19 points clear at the top of the table, Conference sponsors Blue Square declared Burton the winners of the 2008β09 title in a public relations stunt, in which they paid out all bets. Following that announcement, the club saw their lead reduced week by week, but secured promotion to the Football League in the final game of the season, despite losing 2β1 away to Torquay United, when Cambridge United could only manage a goalless draw to Altrincham. At the end of the season Roy McFarland left the club and was replaced by Paul Peschisolido, with Gary Rowett acting as his assistant.