Latest OS MasterMap release details
- The latest OS MasterMap Topography and ITN data release is:
|Publication date||Extraction date|
|30 July 2018||11 July 2018|
All layers are available to order on DVD, via FTP or through the Download centre.
As part of our continuous revision activity, we perform the improvements on OS MasterMap urban content. View our urban content improvement map to see areas where we're making content improvements.
As a part of our ongoing cyclic revision since July 2016, we've updated Tidal data for the following areas:
- England & Wales - 3209.9 km & 237.9 km of coastline updated to date
- Scotland - 1987.1 km of coastline updated to date
OS MasterMap Topography Layer contains a very small number of overlapping lines in the data. These problems are transient and the application of normal Change Only Updates (COU) will remove them in due course.
Known Topography Layer issues:
- There are two instances of lines overlapping or duplication (image) and (image).
- Following the release of descriptive terms, there is a bridge improvement program currently in progress which is due to complete later on this summer.
Known ITN Layer issues:
Both full supply and COU match the FVDS. No discrepancies were found in this ITN release. Schema validations of the COU and full supply contain no errors.
There were some critical errors identified this refresh, these are instances of routing errors relating to one-way routes on 12 separate A roads: A610 (image),A570 (image), A449 (image), A15 (image), A502 (image), A225 (image), A126 (image), A1014 (image), A79 (image), A584 (image), A56 (image), A50 (image).
There were no links with missing road number identified this refresh.
All previously published errors have been corrected.
For past messages, please see the archive.
Urban Path Network updates
This release is validated against and aligned to OS MasterMap® Integrated Transport Network™ released on 19 February 2018.
|OS MasterMap ITN Layer Urban Paths – country zip files||July 18|
|OS MasterMap ITN Layer Urban Paths – 5x5 tile download||July 18|
Future publication of Urban Path Network
Below is our future schedule of publishing Urban Path Network and the ITN product release with which it will have been validated and aligned. We aim to keep these schedules up to date, but you should treat these dates as a guide only as they are subject to change. The ITN used for validation and alignment will be confirmed when Urban Path Network is published.
|Urban Path Network||OS MasterMap ITN Layer|
|October 2018||30 July 2018|
OS MasterMap Sites Layer updates
OS MasterMap Sites Layer is updated every six months. Please see the table below for the latest release date:
|OS MasterMap Sites Layer||November 2017|
Building Height Attribute updates
Building Height Attribute is an alpha release currently under the development. Please see the table below for the latest release date:
|Building Height Attribute||December 2014|