There were initially a large number of unions of general workers, but within a couple of decades, they had all been absorbed into two large general unions - the National Union of General and Municipal Workers (NUGMW), which became the sole union in this group, and the Transport and General Workers' Union, which was instead placed in Group 3. The General Workers Group was originally Group 17 and was renumbered on the creation of the Civil Servants Group, in 1948.
