Latest OS MasterMap release details
- The latest OS MasterMap Topography and ITN data release is:
|Publication date||Extraction date|
|26 March 2018||7 March 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 - 1124.9 km & 49.4 km of coastline updated to date (image)
- Scotland - 1932.5 km of coastline updated to date (image)
OS MasterMap Topography Layer contains a very small number of overlapping polygons and 'holes' 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:
No discrepancies were found this release.
Known ITN Layer issues:
- The full supply matches the FVDS. However, the COU does not. After applying the latest COU, the database contains thirteen extra features due to one Road feature (osgb4000000013370123) and twelve Road Node Info features (osgb5000005114688971, osgb5000005125489647, osgb5000005129933303, osgb5000005131612177, osgb5000005131672578, osgb5000005132111791, osgb5000005132111792, osgb5000005164240339, osgb5000005164634420, osgb5000005166981777, osgb5000005166981779 and osgb5000005193798324) having their referenced features deleted, leaving them invalid and not available for extraction in full supply and FVDS. The references will be updated, or the invalid features deleted ahead of the next release.
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||April 18|
|OS MasterMap ITN Layer Urban Paths – 5x5 tile download||April 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|
|July 2018||8 May 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|