The CWLB arose from a split in the Revolutionary Marxist–Leninist League (RMLL), with the new group founded by Ed Davoren in 1969.
It presumably decided this was a dead end, for, without any acknowledgement of its activities within the INLSF, the CWLB commenced in 1972 to work under its own name, publishing a journal Voice of the People.
Around this time, like the Revolutionary Communist League of Britain a few years later, it decided that it must devote all its practical activities to industrial work.
Draft Theses, Conclusions and Proposals of the Communist Workers League of Britain (Marxist-Leninist) on the Central Question of Party Building,[2] a call to the rest of the movement to collectively study and apply the international experience of party-building.
It is unclear who participated in it, but its positivist outlook inspired the later proposal of the Nottingham Communist Group that a Programme Commission was the way forward.