> 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/buildings-and-infrastructure-portfolio/os-open-linked-identifiers/release-notes/june-2026-epoch-53.md).

# June 2026 – Epoch 53

No issues were identified in this release.

## Feature count

The feature count for Epoch 53 is as follows:

| Feature                                  | Feature count |
| ---------------------------------------- | ------------- |
| BLPU\_UPRN\_ROADLINK\_TOID\_9            | 41 544 741    |
| BLPU\_UPRN\_STREET\_USRN\_11             | 42 316 586    |
| BLPU\_UPRN\_TOPOGRAPHICAREA\_TOID\_5     | 41 557 893    |
| ORROADLINK\_GUID\_ROADLINK\_TOID\_12     | 6 782 590     |
| ORROADNODE\_GUID\_ROADLINK\_TOID\_13     | 40 939        |
| ROAD\_TOID\_STREET\_USRN\_10             | 1 313 711     |
| ROAD\_TOID\_TOPOGRAPHICAREA\_TOID\_3     | 6 276 425     |
| ROADLINK\_TOID\_ROAD\_TOID\_7            | 6 044 650     |
| ROADLINK\_TOID\_STREET\_USRN\_8          | 9 004 068     |
| ROADLINK\_TOID\_TOPOGRAPHICAREA\_TOID\_2 | 14 673 711    |
| STREET\_USRN\_TOPOGRAPHICAREA\_TOID\_4   | 9 528 814     |
| **Grand total**                          | 179 084 128   |

## Next release

The next release of OS Open Linked Identifiers, Epoch 54, is scheduled for **6 August 2026**.


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