James Edwin Williams, 1913-1916
(previously General Secretary of the Amalgamated Society of Railway Servants)
James Henry (Jimmy) Thomas, 1916-1931
Concemore Thomas (Charlie) Cramp, 1931-1933
John Marchbank, 1933-1943
John Benstead, 1943-1947
Jim Figgins, 1947-1953
Jim Campbell, 1953-1957
Sidney F. Greene, 1957-1975
Sidney Weighell, 1975-1983
Jimmy Knapp, 1983-1990
(General Secretary of the National Union of Rail, Maritime and Transport Workers (RMT) between 1990-2001)