 The National Federation of Insurance Workers - later part of the National Union of Insurance Workers - was also sizable, but never gained a seat on the council, unlike the smaller Musicians' Union.The Non-Manual Workers Group was originally Group 16 and was renumbered on the creation of the Civil Servants Group, in 1946.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.