Campus Trade Unions
Students who work in any of the campus facilities can join the QMUL branch of Unison, the biggest union in the UK.
If you are a post-graduate student aiming for an academic career or training to teach in further education or Adult Education, you can always join UCU as a student member, which costs you nothing.
Trade Unions for your student jobs
You can find a union via the Trade Union Congress website.
And via the Industrial Workers of the World website.