An ‘unincorporated association’ is an organisation set up through an agreement between a group of people who come together for a reason other than to make a profit, e.g. a sports club. The term is also used to describe the organisation as not being a 'corporate body', i.e. the organisation is not a limited company. The vast majority of sports club are unincorporated associations. You don't need to register an unincorporated association with anyone and its rules and regulations are typically detailed in a constitution.