> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/release-notes/april-2026.md).

# April 2026

## 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              | 05 March 2026 |
| Improvement Service Streets Data   | 06 March 2026 |
| OS Road, Path, and Routing Content | 06 March 2026 |

## OS MasterMap Highways Network feature counts

| Roads’ Feature         | Count     |
| ---------------------- | --------- |
| AccessRestriction      | 36 803    |
| FerryLink              | 103       |
| FerryNode              | 132       |
| FerryTerminal          | 132       |
| Hazard                 | 43 687    |
| HighwayDedication      | 3 631 384 |
| Maintenance            | 1 328 287 |
| Reinstatement          | 1 528 280 |
| RestrictionForVehicles | 12 306    |
| Road                   | 859 074   |
| RoadLink               | 8 581 482 |
| RoadNode               | 7 606 668 |
| RoadJunction           | 6 884     |
| SpecialDesignation     | 815 876   |
| Street                 | 1 499 535 |
| Structure              | 1 406 622 |
| TurnRestriction        | 1 052 639 |

| Paths’ Feature     | Count     |
| ------------------ | --------- |
| ConnectingLink     | 2 022 580 |
| ConnectingNode     | 1 875 075 |
| FerryLink          | 120       |
| FerryNode          | 208       |
| FerryTerminal      | 208       |
| HighwayDedication  | 413 108   |
| Maintenance        | 207 768   |
| Path               | 25 454    |
| PathLink           | 3 405 529 |
| PathNode           | 4 015 603 |
| Reinstatement      | 212 923   |
| SpecialDesignation | 13 467    |
| Street             | 261 029   |

## Data issues

Please see the [OS MasterMap Highways Network Known Data Issues page](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-known-data-issues.md) for details of live and resolved data issues for the products.

## OS Open Roads lookup table

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\
April 2026 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 May 2026 OS MasterMap Highways release note.

## Next release

The next release of OS MasterMap Highways Network is scheduled for **May 2026**.


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