Barclays is one of the largest financial services companies in the world, with over 30 million customers and clients worldwide. In 2003, Barclays bought the American credit card company Juniper Bank, re-branding it as "Barclays Bank Delaware". Headquartered in Wilmington, Delaware, the U.S. credit card operations of Barclays PLC, Barclays Bank Delaware, is one of the fastest growing credit card issuers in the United States.