OS MasterMap data availability dates

Latest OS MasterMap release details

  • The latest OS MasterMap Topography and ITN data release is:
Publication dateExtraction date
29 August 2017 08 August 2017

All layers are available to order on DVD, via FTP or through the Download centre.

Publication notes

As a part of our Continuous revision activity, we perform the improvements on OS MasterMap urban content. More information about the progress is available here.

As a part of our ongoing Cyclic revision since July 2016 we have updated Tidal data for the following areas:

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:

  • There is an overlapping area caused by a small polygon near Harmondsworth, see image.
  • There are two overlapping areas near the steelworks outside Newport, see image.
  • There is a large gap on the outskirts of Church Leigh near Uttoxeter, see image.
  • There is a gap at the edge of Chittering, see image.
  • There is a missing line in Cambridge, see image.

Known ITN Layer issues:

  • Routing is blocked on the A183 near Marsden Beach, South Shields (439220, 565512) by a road link (osgb5000005170261665) attributed as one-way that should be two-way, see image. The link exiting the image bottom right should be two-way. As a result, routing along the A183 will only work in the north-westerly direction at this location.
  • The A5047 Primary Route is blocked by an Access Prohibited to All Vehicles restriction (osgb4000000013130539) near the Wavertree Botanic Gardens in Liverpool (337400, 390589). The restriction is applied to the eastbound lane of the dual carriage way only, but as a result will not allow routing through the restriction for any vehicle.

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 05 June 2017.

ProductLatest version
OS MasterMap ITN Layer Urban Paths – country zip files July 17 
OS MasterMap ITN Layer Urban Paths – 5x5 tile download July 17

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 2017 29 August 2017

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  April 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

Future publication dates

Below is our future schedule of extraction and publication dates for OS MasterMap Topography and ITN layers. 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 extraction date will be confirmed on the publication date.

Publication dateExtraction date
9 October 2017 21 September 2017
20 November 2017 2 November 2017
3 January 2018 7 December 2017
12 February 2018 25 January 2018

Please note that these dates only apply to bespoke polygons, 'area of interest' orders and national sets – please see Managed GB Dataset information if you take a full or change only supply of a complete OS MasterMap layer.

Past publication dates

The release dates for the previous year OS MasterMap Topography and ITN data were:

Publication dateExtraction date
17 July 2017 29 June 2017
5 June 2017 18 May 2017
2 May 2017 6 April 2017
13 March 2017 16 February 2017
30 January 2017 12 January 2017
19 December 2016 1 December 2016
14 November 2016 20 October 2016
3 October 2016 8 September 2016
22 August 2016 4 August 2016
11 July 2016 23 June 2016
31 May 2016 12 May2016
18 April 2016 1 April 2016