Due to their close connections with employers, recruitment organisations give graduates access to the latest available jobs by signing up with one in your industry, this could help you to land your ideal role

Should I join more than one job organisation?

You can sign up with as many recruitment organisations as you like. However, don't register just for the sake of it - you risk making your job search look unprofessional, as several organisations may suggest you for the same vacancy and the employer won't know who's representing you.
Make sure each organisation you're signed up with tells you whenever they put you forward for a job. Choosing to work with a select few organisations will ensure your job search is focused, and you don't receive spam calls and emails relating to unsuitable vacancies.