August 2025

This release note provides information about the August 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	07 July 2025
Improvement Service Streets Data	03 July 2025
OS Road, Path, and Routing Content	03 July 2025

OS MasterMap Highways Network feature counts

Roads’ Feature	Count
AccessRestriction	35 897
FerryLink	102
FerryNode	132
FerryTerminal	132
Hazard	42 507
HighwayDedication	3 613 852
Maintenance	1 321 617
Reinstatement	1 531 058
RestrictionForVehicles	12 152
Road	855 861
RoadLink	8 522 756
RoadNode	7 552 369
RoadJunction	6 887
SpecialDesignation	793 574
Street	1 494 212
Structure	1 389 726
TurnRestriction	1 048 710

Paths’ Feature	Count
ConnectingLink	1 996 947
ConnectingNode	1 853 765
FerryLink	112
FerryNode	200
FerryTerminal	200
HighwayDedication	408 286
Maintenance	206 280
Path	25 383
PathLink	3 346 392
PathNode	3 948 787
Reinstatement	211 453
SpecialDesignation	13 110
Street	258 847

Data issues

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

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 September 2025.