It was formed as the Rhondda Socialist Society in 1911 by participants in the Miners Reform Movement, which opposed right-wing trade union leaders.
It enthusiastically supported the October Revolution and entered into unity negotiations, with the aim of forming a communist party.
[3] In March 1920, after the Comintern suggested that its British section should attempt to affiliate to the Labour Party, the majority of the group became a branch of the SLP, and a small section formed the Communist Party of South Wales and the West of England with the same programme as the WSF.
[4] In April, eight remaining local clubs formed the "South Wales Communist Council", and concluded negotiations.
Although the group no longer had the resources to hold a ballot, it became part of the new Communist Party of Great Britain, on whose Central Committee they were represented by W. J.