The London Consolidated Society of Journeymen Bookbinders was formed in 1840, a direct descendant of the Journeymen Bookbinders of London. In 1911 the Consolidated Society amalgamated with the Society of Day-working Bookbinders of London, Westminster, etc., Vellum Binders' Trade Society and Bookbinders' and Machine Rulers' Consolidated Union to form the National Union of Bookbinders and Machine Rulers. It should be noted that the annual audits of the London Consolidated Society of Journeymen Bookbinders from 1885-1895 are the sixty-fifth to seventy-fifth which implies that the society was formed in 1820. This contradiction has yet to be resolved.
Reference: C J Bundock The Story of the National Union of Printing, Bookbinding and Paper Workers( Oxford, 1959). John Child Industrial Relations in the British Printing Industry ( London : George Allen & Unwin, 1967).