World Library  
Flag as Inappropriate
Email this Article

Postcode Address File

The Postcode Address File (PAF) is a database which contains all known "Delivery Points" and Open Data campaign for the PAF to be released by the government free of charge.[1]


  • Usage 1
  • File structure 2
  • Licensing 3
  • Public Sector Licence 4
  • Alias data 5
  • Errors 6
  • Costs and public availability 7
  • See also 8
  • References 9
  • External links 10


The "delivery points" held on the PAF are routing instructions used by Royal Mail staff to sort and deliver mail quickly and accurately. Elements of the address, including the post town and postcode are occasionally subject to change, reflecting the operational structure of the postal delivery system. Each address is therefore not necessarily a geographically accurate description of where a property is located.[2] Buildings which contain internal flats or businesses but only have one external front door, will only have those internal elements recorded in PAF if the Royal Mail have direct access to them using a key or fob.

File structure

Element Field name Description Max length
Organisation Organisation Name 60
Department Name 60
Premises Sub Building Name 30
Building Name 50
Building Number 4
Thoroughfare Dependent Thoroughfare Name 60
Dependent Thoroughfare Descriptor 20
Thoroughfare Name Street [3] 60
Thoroughfare Descriptor 20
Locality Double Dependent Locality Small villages [3] 35
Dependent Locality 35
Post Town 30
Postcode Postcode 7
PO Box PO Box 6


The PAF licence sets out what PAF can be used for. Licensing options include internal and external use and also more advanced options such as bureau services and broker groups.

An example of typical internal use is an employee of a licensed call centre who uses a PAF-based solution to look up and verify customer addresses. The PAF data is only being used within the licensed end-user and is not passed on to any other legal entity.

On the other hand, an example of external use would be a company which provides a PAF-based address look-up on their customer facing website for their own customers to use when they order goods or services.

Royal Mail provide licensing advice on their website.

Public Sector Licence

Public Sector Organisations can now apply to use PAF under the Public Sector Licence Use Terms. The Public Sector Licence will be fully implemented on 1 April 2015.

Royal Mail has worked along with the Department of Business, Innovation & Skills (BIS) & the Scottish Government to develop the Public Sector Licence. The Public Sector Licence is being centrally paid for by these organisations so individual public sector organisations will no longer need to return PAF licence fees to Royal Mail.

The eligible public sector organisations will be able to use PAF within their organisation and on their website for non-commercial purposes. In addition, licensed public sector organisations will be able to share data with other licensed organisations and work collaboratively on data-led projects. The following types of Organisations will be eligible:

  • Central Government
  • Local Government & Emergency Services
  • Health Authorities
  • Search & Rescue Organisations

Any organisation wishing to apply can do so now through Royal Mail's Address Management Unit. The Public Sector Licence will be in place for an initial 3 years.

Alias data

The Alias File is a supplementary file containing additional data which are not part of official postal addresses, including details that have changed over time, or have been amended by the public and then used. This file is used to identify these elements and cross-reference with the official postal address.

The Alias File holds four types of record: Locality, Thoroughfare, Delivery Point Alias, and County Alias:

  • The Locality record - old short forms, local names, and 'postally-not-required' (PNR) details.
  • The Thoroughfare record - contains replacement street and road names for a given locality, thoroughfare or dependent thoroughfare combination.
  • The Delivery Point Alias record - holds additional information at given addresses, such as trading names and building names.
  • The County record - holds traditional, administrative and postal county information.

Royal Mail, in their guide to the data products[4] imply that the county alias information was provided when Royal Mail removed the former postal county from the main file.


Royal Mail acknowledges that the PAF contains errors, and publishes forms for submitting error reports. A very small number of addresses are not listed correctly, and others (especially new developments) may not be listed at all for a period of time.

Costs and public availability

Between 2004 and 2006 a consultation was taken about the future management of the PAF. The proposal to release it for use at low or no cost was rejected, and the business model where it was used to raise money from profitable corporations was retained.[5]

The balance sheet for the PAF for 2005/6 disclosed an income of £18million, 8.6% of which was profit.[6]

Following a Government consultation,[7] on 1 April 2010 Ordnance Survey released co-ordinate data for all Great Britain postcodes (but not their address elements) for re-use free of charge under an attribution-only license, as part of OS OpenData.

See also


  1. ^ Arthur, Charles (2010-01-22). "Developers dismayed as No.10 blocks free postcode file".  
  2. ^ "Ofcom | Postal Services" (PDF). Retrieved 2013-06-10. 
  3. ^ a b "How To Address UK Mail Correctly To Ensure It Gets Delivered To The Correct Address First Time". Retrieved 2013-06-10. 
  4. ^ PAF Digest, p12)
  5. ^ PostComm. "Postcode Address File - review of the management of PAF". 
  6. ^ "Royal Mail's Future management of PAF" (PDF). April 2007. 
  7. ^ DCLG: Policy options for geographic information from Ordnance Survey: Consultation Archived December 30, 2009 at the Wayback Machine

External links

  • PAF from Royal Mail
  • Technical guide to using the PAF file - A document that explains the PAF file in some detail.
  • Alias File from Royal Mail
  • GB postcode geolocation file (excludes Northern Ireland)
  • Public Sector Licence Information Pack
  • Watch Royal Mail’s PAF video
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.