April 2025

This release note provides information about the April 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 March 2025
Improvement Service Streets Data	06 March 2025
OS Road, Path, and Routing Content	05 March 2025

OS MasterMap Highways Network feature counts

Roads’ Feature	Count
AccessRestriction	35 635
FerryLink	102
FerryNode	132
FerryTerminal	132
Hazard	41 988
HighwayDedication	3 603 887
Maintenance	1 318 056
Reinstatement	1 527 138
RestrictionForVehicles	12 119
Road	854 328
RoadLink	8 507 463
RoadNode	7 538 618
RoadJunction	6 883
SpecialDesignation	789 381
Street	1 490 806
Structure	1 385 341
TurnRestriction	1 047 714

Paths’ Feature	Count
ConnectingLink	1 996 794
ConnectingNode	1 853 848
FerryLink	112
FerryNode	200
FerryTerminal	200
HighwayDedication	404 637
Maintenance	204 954
Path	25 348
PathLink	3 334 078
PathNode	3 936 187
Reinstatement	210 137
SpecialDesignation	12 840
Street	256 900

Data issues

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). The refreshed lookup table will be published in the May OS MasterMap Highways Network publication, but will reflect April 2025 data for both OS MasterMap Highways Network and OS Open Roads.

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

Product Updates

The Silvertown Tunnel, London will be open from 07 April 2025 and will be available in the May 2025 release of OS MasterMap Highways Network.

Next release

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