| Name | No of members | Industry it represents |
|---|---|---|
| Unite | 1,310,649 | Industry-wide |
| Unison | 1,266,711 | Public services |
| GMB | 617,064 | Industry-wide |
| USDAW | 433,402 | Retail and manufacturing |
| NUT | 330,719 | Teachers |
| NASUWT | 293,024 | Teachers |
| PCS | 247,345 | Civil service |
Source: TUC
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