Hebrew Socialist Union in London ended in 1876.
Socialist Union Party ended in 1941.
Socialist Union of America ended in 1959.
Socialist-Communist Union ended in 1932.
International Working Union of Socialist Parties ended in 1923.
Smith's Bank ceased its operations in 1902, when it merged with Union Bank of London to form Union of London and Smith's Bank.
Socialist Rebirth ended in 1995.
Independent Socialist Faction ended in 1977.
Workers' Socialist Federation ended in 1924.
British Socialist Party ended in 1920.
National Socialist League ended in 1939.
Portuguese Socialist Party ended in 1933.
Italian Socialist Party ended in 1994.