It also provides commercial banking for small to medium businesses and corporate and institutional banking services. HSBC Bank plc is a wholly owned subsidiary of HSBC Holdings plc. The HSBC Group: HSBC Holdings plc, the parent company of the HSBC Group, is headquartered in London. The Group serves customers worldwide from around 7,500 offices in over 80 countries and territories in Europe, the Asia-Pacific region, North and Latin America, and the Middle East and Africa. With assets of US$2,556bn at 31 December 2011, HSBC is one of the world's largest banking and financial services organisations.