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Supporting the DCA community

We offer support services to Participating Data Co-operation Agreement (DCA) Authorities that are responsible for the creation of Address and Streets data. 

If you have any technical questions please check our FAQs or please contact us via email or phone 020 7630 4602 between 9.00 and 17.30 any working day (Monday to Friday).


GeoPlace services offered through the DCA

An overview of the core services we offer to support the creation and maintenance of address and street data can be found on our GeoPlace Services page 

If you would like further details, please contact the GeoPlace helpdesk.


About the DCA

The Data Co-operation Agreement is issued by GeoPlace® LLP to all district, county and Unitary councils in England and Wales. It provides a legally binding agreement between the parties to support the creation and maintenance of GeoPlace databases (particularly related to address and street information for England and Wales and address information for Scotland through separate agreements).

The Agreement underpins a recognition by government of the substantial social and economic benefits that core reference geography brings and forms part of the framework put in place by Government to enable access by the whole of the public sector to definitive spatial information through the Public Sector Mapping Agreement (PSMA). The Agreement also recognises the role of councils in the creation and source of particular spatial information.

With an Effective Date of 1st April 2012, the DCA replaces similar arrangements between all councils and the Local Government Information House (LGIH - a subsidiary of the LGA) which were in place from 2005 (the Mapping Services Agreement (MSA)) and expired on the 31st March 2012.


Welcome to the DCA

You are part of the most successful shared service arrangement there has been in Great Britain. The AddressBase range of products and the National Street Gazetteer are used across the public and private sector and are informed by the hard work you do as the Custodian for your authority in partnership with GeoPlace.

This document summarises the relationship between Data Cooperation Agreement (DCA) contacts and GeoPlace, including the DCA contractual arrangement and governance structure. It also provides information on how address and street data is used within councils; further information about GeoPlace, including key contact details, and where to find key documents and resources to help you in your day-to-day role.

The document also provides information and evidence of the benefits of well managed address and street data to councils.  From tax revenues to route optimisation in waste management, the savings stem from transforming the way services are delivered, enabling channel shift and reducing duplication of effort.

The address and street data you create and maintain is also being widely used by central government:

  • drives the location services on your smart phone

  • helps emergency responders share information more effectively get to call outs

  • enables utilities to connect services to a new home

  • is used by the Office for National Statistics to collect census data

  • helps packages be delivered to your house

  • is used by HMRC to detect fraudulent activity across tax systems

  • helps identify properties suitable for sustainable energy schemes

  • is part of the Individual Electoral Registration programme

  • helps ensure the UK has secure, clean, affordable energy supplies

  • is used by Tell Us Once to ease the burden of reporting a bereavement

  • used for risk assessment and underwriting by insurance companies

  • enables the Health and Safety Executive (HSE) staff to rapidly identify and prioritise high-risk businesses for inspection along with their locations


About the Public Sector Mapping Agreement (PSMA)


The PSMA is a partnership between the Department for Business, Innovation and Skills and Ordnance Survey. It is centrally funded for any public sector body that is eligible to access and use of a selection of high quality digital map products.

The PSMA spans almost all public sector organisations and will run for ten years, it started on April 1st, 2011 and has already attracted over 2,800 organisations to take advantage of being a member.

The PSMA provides access to core geographic datasets from Ordnance Survey including the AddressBase® range of products.

For more information about the PSMA, including membership, access to products and support, visit the Ordnance Survey website.


Resources for Authority Address Custodians

Authority Address Custodians have access to a number of technical resources associated with compiling Authority Addressing Datasets. These and other documents are also available in the library or via the login on the GeoPlace Services site.


Resources for Authority Street Custodians

Authority Street Custodians have access to a number of technical resources associated with compiling Authority Streets Datasets. These and other documents are also available in the library or via the login on the GeoPlace Services site.

Use of the NSG:


DCA governance resources 

Information on GeoPlace governance can be found in our Annual Statement. Resources on DCA governance can be seen below:


INSPIRE compliant view service for addresses

On behalf of local authorities and GeoPlace, Ordnance Survey has released an INSPIRE compliant view service for addresses derived from AddressBase.

The INSPIRE Address View serves points derived from AddressBase Premium that are representative of the central locations of addresses within Great Britain.  Address view points are rendered according to the portrayal rules as defined by the INSPIRE Data Specification on Addresses.

The INSPIRE Address View is free for personal, non-commercial use only.  This also allows you to:

  • Register to start a Free plan.

  • View the Data Specification Guidelines

  • See the terms of Service - Schedule 4