Trade unions
| Full Name | Short Name | Notes |
|---|---|---|
| Amalgamated Engineering and Electrical Union | AEEU | Active from 1992 - 2001. Formed through the merger of the Amalgamated Engineering Union (AEU) with the Electrical, Electronic, Telecommunication and Plumbing Union (EETPU). In 2001 the AEEU merged with the Manufacturing, Science and Finance (MSF) union to form Amicus. |
| Amalgamated Engineering Union | AEU | Active 1920 - 1992. Merged with the Electrical, Electronic, Telecommunication and Plumbing Union (EETPU) in 1992 to form the Amalgamated Engineering and Electrical Union (AEEU). |
| Amalgamated Society of Beamers, Twisters and Drawers | ASBTD | |
| Amalgamated Society of Boilermakers | ASB | check name |
| Amalgamated Society of Carpenters and Joiners | ASCJ | |
| Amalgamated Society of Engineers | ASE | |
| Amalgamated Society of South Wales Colliery Workers | ASSWCW | |
| Amalgamated Union of Engineering Workers | AUEW | |
| Amalgamated Union of Foundry Workers | AUFW | |
| Amalgamated Union of Woodworkers | AUWW | |
| Amalgamated Weavers' Association | AWA | |
| Amicus | Amicus | Formed in 2001 when the Amalgamated Engineering and Electrical Union (AEEU) merged with the Manufacturing, Science and Finance (MSF) union. Merged with the Transport and General Workers, Union (T&G) to form Unite in 2007. |
| Assocation of Professional, Executive & Clerical Staff | APEX | |
| Associated Metalworkers Union | AMU | |
| Associated Society of Locomotive Engineers and Firemen | ASLEF | |
| Associated Union of Building Trades Workers | AUBTW | check title |
| Association of Building Technicians | Ass.Build Tech | |
| Association of Cinematograph & Television Trades | ACTT | |
| Association of Clerical, Technical, Secretarial Staff | ACTSS | Check full name! |
| Association of Dyers | Assoc Dyers |