 "The Spartacist League/Britain was founded in 1978 as a fusion between the London Spartacist Group and the Trotskyist Faction (TF), which split from Alan Thornett’s Workers Socialist League ...".The Trotskyist Faction, with about two dozen members, left the Workers Socialist League on 19 February 1978 and merged with the London Spartacist Group at a conference held seven weeks later over the weekend of 4–5 April.The new party claimed to have about fifty members in London and the Midlands.