Update 12 May 2026

Any downloads containing Council Tax address data linked on this page have been removed as of today following claims from Ordnance Survey and GeoPlace LLP that the address data "should be considered as containing the intellectual property of Ordnance Survey, GeoPlace and Royal Mail, and its continued publication constitutes infringement of our respective rights."

Those third-party claims has not been validated by me. Currently the Council itself has not communicated to me any change in its position on the ownership or open licensing of the data.

If correspondence has been removed, I will re-upload that when I have time. (If you have previously downloaded the data it will have been packaged with correspondence documenting permission for re-use from the Council.)

If you have previously downloaded a dataset via this page, or would like more information about the "takedown notice" received from OS/GeoPlace and the other datasets affected, please read:

Ordnance Survey demands removal of nearly all Council Tax address datasets previously released as open data

The remainder of this post is as originally published.

This is the latest in an occasional series of blog posts about the campaign for open address data in the UK. Previous posts are listed at the bottom.

In this post, I make available a new open address dataset released by Islington Council.

Background

As described in previous posts, last year at my request Leeds City Council published a new list of all domestic properties in its area, including full addresses and Council Tax bands, with notice of permission to re-use the data under the terms of the Open Government Licence. I have subsequently requested equivalent datasets from a small number of other English councils.

I have created a landing page on my Datadaptive site with download links and other information about the Council Tax address datasets released as open data so far:

www.datadaptive.com/addr/

Release from Islington Council

The latest council to release its Council Tax address list is Islington Council in London. The Council disclosed the requested data under the FOI Act without any difficulties, and granted permission for re-use under the terms of the Open Government Licence (OGL) after some back and forth in correspondence.

You can download my correspondence with the Council, including the information as disclosed: CT_address_list_Islington_Council_FOI-6732625.zip (2.8 MB).

Thanks to Islington Council's Information Governance Team for facilitating the disclosure and open licensing of this data.

Geocoded open version of Islington address dataset

I have created a geocoded version of the Islington Council address dataset, which you can also download: ISLINGTON_CTBANDS_ONSUD_202509.zip (11.6 MB).

This dataset contains all of the information from the underlying Council dataset, other than the postcodes. Geographic coordinates and postcodes have been appended from the latest edition of the ONS UPRN Directory (October 2025). I have prepared the data in CSV and GeoJSON formats, suitable for re-use under the terms of the Open Government Licence. Please see the enclosed ReadMe file for additional information.

Previous posts related to the campaign for open address data in the UK

Cornwall Council has released its Council Tax address list as open data (17 October 2025)

Rushcliffe Borough Council has released its Council Tax address list as open data (26 September 2025)

It took seven months but Hackney Council has released its Council Tax address list as open data (5 August 2025)

More open address datasets released by councils in England (30 January 2025)

Open data: are ONS's address data products legal? (7 January 2025)

Open address data published by Leeds City Council – Ordnance Survey intervenes to protect Royal Mail IP (24 November 2024)

Open address data published by Leeds City Council shows the way to a national open address file (16 October 2024)

Whatever happened to the UK Government's Open Address Register programme? (1 October 2024)

FOI release: Royal Mail's view on a House of Lords proposal for open address data in the UK (15 August 2024)

Open addresses in the House of Lords – what happened? (28 March 2024)

Thoughts on campaigning for open address data in the UK (30 June 2023)

UK address data: a primer and bibliography (last updated 30 November 2022)