30th April 2021:The two Clubs that both won seven English Second Flight League Championships are:
Leicester City (1924–25, 1936–37, 1953–54, 1956–57, 1970–71, 1979–80, 2013–14)
Manchester City (1898–99, 1902–03, 1909–10, 1927–28, 1946–47, 1965–66, 2001–02).
