National Savings and Investments (NS&I), formerly called the Post Office Savings Bank and National Savings, is a state-owned savings bank in the United Kingdom. It is an executive agency of the Chancellor of the Exchequer. The aim of NS&I is to attract funds from individual savers in the UK for the purposes of funding the government s public sector borrowing requirement (i.e., the funds in excess of taxation that the government requires to fund its activities). NS&I's head office is in Pimlico, London, with operational sites in Blackpool, Glasgow and Durham. However, its entire back office operation is contracted out to a German company, Siemens IT Solutions and Services. It offers many of its services through post offices, and was founded in 1861 as a postal savings system.