August Thalheimer of the Communist Party Opposition (KPO) sent regular reports to the Leninist League while he was in Spain, during the Spanish Revolution.
[1] The League participated in the Glasgow Apprentices Strike of March 1937,[2] after which their base moved to Coventry.
[4] In 1944 a split from the Common Wealth Party led by Joe Thomas, the Communist Workers Group, fused with the remnants of the Leninist League as the London-based Revolutionary Workers Association,[5] which remained affiliated with the Oehlerite international.
In 1946 the RWA itself split, with Levin and Thomas's group leaving the International and forming the Socialist Workers League (SWL),[6][7] which lasted until 1951.
Some members remained active in the Socialist Workers Group (a London branch of the Federation of Marxist Groups/Socialist Workers Federation associated with Harry McShane and Eric Heffer), and later the Independent Labour Party (ILP) and Workers League, a split from the ILP again led by Levin and Thomas.