found: The union, winter 1990:t.p. (GMB)
found: GMB WWW site, 25 Oct. 2005:history (General, Municipal, Boilermakers and Allied Trade Union formed in 1982; GMB was adopted as its official title in 1989; for the historically minded the G derives from General, the M from Municipal and the B from Boilermakers but GMB is not an abbreviation for these titles; so many unions have merged with GMB that the initials are its official name); 5 June 2014: home p. (GMB; GMB National Office, 22 Stephenson Way, Euston, NW1 2HD)
found: BL auth. file, 25 Oct. 2005(hdg.: GMB)
found: GMB www site, 26 Oct. 2006:history (The Association of Professional, Executive, Clerical and Computer Staff (APEX) joined GMB in 1989)