Get the latest dates when OS MasterMap Topography Layer data is refreshed. Plus you can find past publication dates with their accompanying release note.
OS MasterMap Topography Layer
The latest OS MasterMap Topography data release is:
| Publication date | Extraction date | Release Note |
| 12 June 2023 | 24 May 2023 | June 2023 |
To download the latest release, visit the OS Data Hub.
Release note
As part of our commitment to improving our processes we have updated how we supply release notes to include more information. These include all product feature counts and any pertinent product updates to OS MasterMap Topography Layer.
Download the current OS MasterMap Topography release note (PDF).
Future publication dates
Below is our future schedule of extraction and publication dates for OS MasterMap Topography Layer. We aim to keep this schedule up to date, but you should treat these dates as a guide only as they are subject to change. The extraction date will be confirmed on the publication date.
Please note these dates only apply to bespoke polygons, 'area of interest' orders and national sets.
| Publication date | Extraction date |
| 24 July 2023 | 05 July 2023 |
| 29 August 2023 | 09 August 2023 |
| 09 October 2023 | 20 September 2023 |
| 20 November 2023 | 01 November 2023 |
Past publication dates
Here are the dates when OS MasterMap Topography Layer was previously refreshed:
| Publication date | Extraction date | Release Note |
| 09 May 2023 | 19 April 2023 | May 2023 |
| 27 March 2023 | 08 March 2023 | March 2023 |
| 13 February 2023 | 25 January 2023 | February 2023 |
| 03 January 2023 | 08 December 2022 | January 2023 |
| 14 November 2022 | 27 October 2022 | November 2022 |
OS MasterMap Sites layer updates
OS MasterMap Sites Layer is updated every six months. The latest update is from April 2023.
Download our OS MasterMap Sites Layer release note (PDF).
Building Height Attribute updates
Building Height Attribute is updated every six months. The latest update is from April 2023.
Download our Building Height Attribute release note (PDF).