The Metropolitan League ran for twenty-two seasons between 1949–50 and 1970–71.
The league was composed of:
Eight new clubs joined the league in its second season;
Five new clubs joined the league in its third season;
Four new clubs joined the league for its fourth season;
Four new clubs joined the league prior to the start of the 1953–54 season;
One new club joined the league prior to the start of the 1954–55 season;
One new club joined the league prior to the start of the 1955–56 season;
Two new clubs joined the league prior to the start of the 1956–57 season;
Two new clubs joined for the 1957–58 season;
One new club joined the league for the 1958–59 season;
One new club joined the league for the 1959–60 season;
Two new clubs joined the league for the 1960–61 season;
Three new clubs joined the league for the 1961–62 season;
Two new clubs joined the league for the 1962–63 season;
A second division was added for the 1963–64 season, with all the clubs in the division new apart from Gravesend & Northfleet reserves. Six new clubs joined Division One;
Division Two was disbanded after a single season, although four of its clubs stayed in the league and moved up to the single division. An additional four new clubs joined the league for the 1964–65 season;
Five new clubs joined the league for the 1965–66 season;
Three new clubs joined the league for the 1966–67 season;
One new club joined the league for the 1967–68 season;
Four new clubs joined the league for the 1968–69 season:
Three new clubs joined the league for the start of the 1969–70 season;
Two new clubs joined the league for the start of the 1970–71 season;
At the end of the season four clubs moved up to the Southern League as it added a new second tier division, splitting the previous Division One into Division One North and Division One South.[1]