Branches consist of all the members of a given geographical area or, in large workplaces or specific sections of industry, a branch may be workplace based. Each GMB branch has its Officers:
- Branch Secretary
- Branch President
- Branch Youth Officer
- Branch Equality Officer
All Branch Officers are elected every four years and are usually volunteers. These individuals are not employed by the GMB but work on behalf of the GMB to provide advice and support to those members belonging to their branch.