In 1939 it absorbed the United Ladies Tailors' Trade Union.

[1] The NUTGW had 118,700 members in 1945, making it the tenth largest union in Britain.

[2] It absorbed the Manchester-based Waterproof Garment Workers' Trade Union in 1972.

[1] The NUTGW faced a long-term decline in membership over the second half of the 20th century as the number of workers employed in the British clothing industry shrunk.

[3] The NUTGW merged into the General, Municipal, Boilermakers and Allied Trades Union in 1991.