# Product supply

## Available formats

The OS Open UPRN product is available as either a comma-separated values (CSV) file or GeoPackage (GPKG) file.

### CSV overview

OS Open UPRN is supplied for the whole of Great Britain as a single CSV file containing all records.

CSV files are a delimited text file that uses commas or other characters to separate individual elements of a feature. It is used to store data, often in the form of a table. These tables can be freely loaded into databases and programs, allowing for the easy loading and updating of data holdings.

The CSV format of OS Open UPRN means:

* Column headers will be included in the file.
* There will be one record per line in each file.
* Fields will be separated by commas.
* No comma will be placed at the end of each row in the file.
* Records will be terminated by Carriage Return / Line Feed.

### GeoPackage overview

OS Open UPRN is supplied as a single GeoPackage for the whole of Great Britain.

GeoPackage (GPKG) is an open standard data format as defined by the Open Geospatial Consortium (OGC). GeoPackage is designed to be a lightweight format that can contain large amounts of varied and complex data in a single, easy-to-distribute and ready-to-use file. 

Please be advised that older versions of GIS software may need updating before being able to display and interact with GeoPackage files.

GeoPackage offers users the following benefits:

* The single file is easy to transfer and offers the end-user a rich experience.
* Attribute names are not limited in length, making it user-friendly.
* The file size limit is very large at 140TB, so lots of data can be easily accommodated (please note that a file size limit may be imposed by the file system to which the file is written).
* It supports raster, vector and database formats, making it a highly versatile solution.
* It is an OGC standard.
* In most cases, it is a plug and play format.

For information on how to open, use and understand a GeoPackage dataset, please refer to our [‘Getting Started with GeoPackage’ guide](https://docs.os.uk/os-downloads/resources/product-resources/getting-started-with-geopackage-and-vector-tiles-guides/getting-started-with-geopackage). Further detailed information on GeoPackage can be taken from the [GeoPackage website](https://www.geopackage.org).

## Supply mechanism

OS Open UPRN is supplied as a free online download and is available without registration from the [OS Data Hub](https://osdatahub.os.uk/data/downloads/open). You can select a data format during the download process; depending on which format you choose, you will receive a single file containing either all records with headers already included (CSV) or the structure already defined (GeoPackage).

## Coverage

This product covers Great Britain. 

Both formats are available as a **Full Supply only**. Areas of interest (AOI) orders and Change-Only Updates (COUs) are not available for this product.

## Currency

The product will be refreshed on a six-weekly basis, in-line with the relevant AddressBase Premium product release Epoch dates. The dates for product release can be found on the ['Future publication dates' page](https://docs.os.uk/os-downloads/products/addressbase-fundamentals/future-and-past-publication-dates#upcoming-epoch-publication-dates) (these dates are also published on the [OS website](https://www.ordnancesurvey.co.uk/products/addressbase-epoch-dates)).