Favourability ratings tend to be overwhelmingly positive between countries within a subset of the Anglosphere known as CANZUK (consisting of Canada, Australia, New Zealand and the United Kingdom), whose members form part of the Commonwealth of Nations and retain Elizabeth II as head of state. In the wake of the United Kingdom's decision to leave the European Union as a result of a referendum held in 2016, there has been mounting political and popular support for a loose free travel and common market area to be formed between the CANZUK countries.