Joining UNISON Ready to join 1.3 million public service workers in UNISON? There are three ways to join and receive essential cover, wherever you work. To join online please go to https://join.unison.org.uk/. To join via phone call UNISON on 0800 171 2193. To join via wage deduction please download and complete the membership form, available here, and return the form to the Suzanne Stead, Branch Secretary, in the Rutherford Building. How much does it cost?