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The National Street Gazetteer (NSG) is a database of all streets in
England and Wales England and Wales () is one of the three legal jurisdictions of the United Kingdom. It covers the constituent countries England and Wales and was formed by the Laws in Wales Acts 1535 and 1542. The substantive law of the jurisdiction is ...
compiled from the responsible highway authorities which is restricted to local authorities and
statutory undertaker In the United Kingdom, statutory undertakers are the various companies and agencies given general licence to carry out certain development and highways works. Generally these are utilities and telecoms companies or nationalised companies such as Ne ...
s (e.g. for maintenance or installing services).


Database

In the United Kingdom
local authorities Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-loca ...
have responsibility for the creation and maintenance of streets as well as the management of street works. The NSG brings together the knowledge spread across local authorities and is a repository for combining the
local street gazetteer Local may refer to: Geography and transportation * Local (train), a train serving local traffic demand * Local, Missouri, a community in the United States * Local government, a form of public administration, usually the lowest tier of administrat ...
s they are required to keep. Maintenance of the NSG is covered by the National Streetworks Register legislation and is a statutory requirement of local authorities. In effect, the NSG has become the definitive list of all streets in England and Wales and provides a definitive identification of all streets with the use of a Unique Street Reference Number (USRN). On a monthly basis, highway authorities are required to upload their street gazetteers, along with Associated Street Data (ASD), to the NSG; a master index built to the national standard BS 7666, for access by a number of other organisations via the NSG online hub and managed by
GeoPlace GeoPlace is an organisation (LLP) established in 2010 that oversees the production and maintenance of national address and street gazetteers created and maintained with input from all local authorities in England, Wales and (later) Scotland. GeoPlac ...
. This enables third-party organisations such as public utilities to meet their statutory requirements to provide the appropriate streetworks notifications. The NSG has exceeded its initial aims to provide a consistent and unambiguous identification of streets and their associated streetworks. The street gazetteer has become a foundation for the
National Land and Property Gazetteer The National Land and Property Gazetteer (NLPG) is an initiative in England and Wales to provide a definitive and consistent address (geography), address infrastructure. Up until recently Great Britain has not held a single list of all addresses in ...
(NLPG). It has also become the basis for Transport for London's (TfL) road network through the Pan London Street Gazetteer. Originally the NSG was managed by the national mapping agency for the UK, Ordnance Survey (OS). However, it became clear that OS was unwilling or unable to provide a rigorous management of the service. Part of this may have been because OS was operating outside of their acknowledged expertise in mapping rather than data management, although it has been suggested {{who, date=November 2012 that OS simply saw no commercial advantage in developing the NSG. In May 2005 the
Mapping Services Agreement {{Unreferenced, date=February 2022 The Mapping Services Agreement (MSA) is a licensing contract between local authorities in the United Kingdom and suppliers of geographic data. Most of its contents are covered by commercial in confidence requiremen ...
(MSA) was signed with local authorities. This was part of a long drawn out process of procurement for mapping data and included management of the NSG and the NLPG. The outcome of agreement involved the loss of the custodianship by OS of the NSG which was awarded to the data management company Intelligent Addressing Ltd who were already managers of the NLPG.


See also

*
National Address Gazetteer The National Address Gazetteer is a database designed to provide a definitive source of publicly owned spatial address data for Great Britain.{{cite web , title=National Address Gazetteer , url=https://data.gov.uk/dataset/national-address-gazetteer ...
*
National Streetworks Gazetteer The National Streetworks Gazetteer is a service provided in partnership between Ordnance Survey and British highway authorities – the County, City or District Councils – which provides information on each and every adopted highway in England a ...


External links


National Street Gazetteer
Databases in England Geography of England Gazetteers Databases in Wales Geography of Wales Geographical databases in the United Kingdom