Social Democratic Federation
(1884-1937)

group and political party

c. 53

The Social Democratic Federation (SDF) was established as Britain's first organised socialist political party by H. M. Hyndman, and had its first meeting on 7 June 1881. Those joining the SDF included William Morris, George Lansbury and Eleanor Marx. However, Friedrich Engels, Karl Marx's long-term collaborator, refused to support Hyndman's venture. Many of its early leading members had previously been active in the Manhood Suffrage League. The SDF battled through defections of its right and left wings to other organizations during the first decade of the 20th Century before uniting with other radical groups to establish the Marxist British Socialist Party from 1911 until 1920 (not to be confused with the current Socialist Party of Great Britain founded in 1904, and the Socialist Party (England and Wales) founded in 1997).

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Commemorated on 1 plaque

Photo of Henry Hyndman and Social Democratic Federation green plaque
Spudgun67 on Wikimedia Commons

Headquarters of the Social Democratic Federation 1926-1937 founded by Henry Hyndman in 1884

54 Colebrooke Row, Islington, London, United Kingdom where it was founded (1884)