October 2025

This release note provides information about the October 2025 release of OS MasterMap Highways Network.

Source data currency

The following information relates to the currency of the source data used in the creation of this release of OS MasterMap Highways Network:

Data Source	Date
GeoPlace Streets Data	04 September 2025
Improvement Service Streets Data	04 September 2025
OS Road, Path, and Routing Content	04 September 2025

OS MasterMap Highways Network feature counts

Roads’ Feature	Count
AccessRestriction	35 945
FerryLink	103
FerryNode	132
FerryTerminal	132
Hazard	42 989
HighwayDedication	3 619 819
Maintenance	1 323 862
Reinstatement	1 532 084
RestrictionForVehicles	12 169
Road	856 455
RoadLink	8 532 071
RoadNode	7 560 668
RoadJunction	6 888
SpecialDesignation	800 510
Street	1 495 691
Structure	1 392 825
TurnRestriction	1 049 527

Paths’ Feature	Count
ConnectingLink	1 998 522
ConnectingNode	1 855 089
FerryLink	118
FerryNode	206
FerryTerminal	206
HighwayDedication	409 582
Maintenance	206 655
Path	25 390
PathLink	3 349 578
PathNode	3 952 404
Reinstatement	211 823
SpecialDesignation	13 197
Street	259 440

Data issues

Please see the OS MasterMap Highways Network Known Data Issues page for details of live and resolved data issues for the products.

We aim to publish a refreshed OS Open Roads Lookup table with OS MasterMap Highways Network – Roads and OS MasterMap Highways Network– RAMI orders twice a year in line with OS Open Roads publication (April and October). Due to unexpected delays, please be aware that the refreshed lookup table will not be published with the October OS MasterMap Highways Network publication as planned. A refreshed OS Open Roads Lookup table will be published as soon as possible and a further update will be provided in the November 2025 OS MasterMap Highways release note.

Due to differing publication schedules, OS MasterMap Highways customers who also use OS Open TOID or OS Open Linked Identifiers may notice some misalignment of identifiers between these products. This misalignment should be resolved in the next scheduled refresh of OS Open TOID / OS Open Linked Identifiers.

Product updates

As part of our forward scoping, we are currently reviewing the use of the Open Roads Lookup Table CSV included in the OS MasterMap Highways data packages (available in the Resources folder).

We are particularly interested in understanding how the link between Highways and Open Roads is being used in practice, and how widespread its adoption is.

If you actively use the lookup CSV and are happy to share your use cases or provide feedback, we’d love to hear from you. Please get in touch with the Networks Product Team at [email protected].

Next release

The next release of OS MasterMap Highways Network is scheduled for November 2025.