Today in the UK there are about 700 credit unions with assets exceeding 200 million pounds. In recent decades, many credit unions began to resort to such form of service as Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. The difference between credit unions and banks is clearly is apparent when comparing the structure of assets and liabilities of credit unions and banks. Share contributions are transferred to the credit union on the basis of membership for the whole stay of a shareholder as member of the credit union and are the basis of membership. Until the mid-XX century, credit unions in the United States had little assets that did not exceed, as a rule, 100 thousand dollars The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU.