Ordnance Survey – Great Britain's national mapping agency
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The data is in GML version 2.1.2 format, compressed to .gz, and you will need compliant software to run it. OS MasterMap compliant software is available from our partners. Access the Systems/Software page for information on what is currently available.
Change-only update
You can download the initial file and then apply the changes in the corresponding change-only file. The full update file contains a complete resupply of the initial data, including updates.
Geographically chunked
| Port Talbot | Basingstoke | |
| Initial data | 47135-SS7886-5i1.gz (2.02 Mb - Currency Date 12/06/08) |
47124-SU6152-5i1.gz (1.41 Mb – Currency Date 12/06/08) |
| Change-only update | 49929-SS7886-5i1.gz (63 Kb - COU from 12/06/08 - 16/09/08) | 49279-SU6152-5i1.gz (63 Kb - COU from 12/06/08 -16/09/08) |
| Full update | 49299-SS7886-5i1.gz (2.02 Mb - Currency Date 16/09/08) |
49287-SU6152-5i1.gz (1.41 Mb – Currency Date 16/09/08) |
Non-geographically chunked
| Port Talbot | Basingstoke | |
| Initial data | Currently unavailable |
47122-000001-30.gz (1.41Mb - Currency Date 12/06/08) |
| Change-only update | Currently unavailable | 49281-000001-30.gz (63 Kb – COU from 12/06/08 - 16/09/08) |
| Full update | Currently unavailable |
49286-000001-30.gz (1.41Mb - Currency Date 16/09/08) |
In order to be able to test that systems are translating data correctly (for instance, not dropping any features), you can download four files of Basingstoke. Each theme within a file has full TOID® counts and also the total area.
| Basingstoke | |
| 6745-SU6151-2c1.gz | 6745-SU5953-2c2.gz |
| 6745-SU6153-2c3.gz | 6745-SU5951-2c4.gz |
View the product interactively
Take a look at how Topography Layer data might appear in a GIS by launching our product viewer.
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