Trade unions
| Full Name | Short Name | Notes |
|---|---|---|
| Amalgamated Engineering and Electrical Union | AEEU | |
| Amalgamated Engineering Union | AEU | |
| 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 Engineering Workers | AUEW | |
| Amalgamated Union of Foundry Workers | AUFW | |
| Amalgamated Union of Woodworkers | AUWW | |
| Amalgamated Weavers' Association | AWA | |
| Amicus | Amicus | |
| 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! |