The Office of Public Sector Information (OPSI) is at the heart of information policy, setting standards, providing a practical framework of best practice for opening up and encouraging the re-use of public sector information. It provides a wide range of services to the public, information industry, government and the wider public sector relating to finding, using, sharing and trading information. Part of the Cabinet Office reporting structure it was formerly known as Her Majesty’s Stationery Office (HMSO)