This organisation is the trade body for all UK building societies. Building Societies differ from banks in that they are mutual organisations, which means that most of its customers (borrowers, savings and current account holders, etc) are members and have rights to receive information, vote on important decisions and attend society meetings. On the other hand, most banks are listed companies with external shareholders that are paid a dividend out of the bank�s profits.Website: < a href="https://www.bsa.org.uk/">https://www.bsa.org.uk/