> 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/addresses-and-names-portfolio/addressbase-premium/addressbase-premium-downloads.md).

# AddressBase Premium Downloads

{% hint style="info" %}

### Product download

This page provides downloadable files to support the product in use. To download the product itself, please visit the [OS Data Hub](https://osdatahub.os.uk/data).
{% endhint %}

## Classification scheme

The product classification scheme is available to download as a zip file (in CSV and .xlsx formats) from the [classification scheme page](/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/classification-scheme.md) in the AddressBase Fundamentals section.

## Header files

The header files for AddressBase Premium are available for download (as CSV files) from the following zip file:

{% file src="/files/79ij1Mu4Tw90h1Htj0XP" %}

## Local custodian codes

Local custodian codes for the product are available to download as a zip file (in CSV format) from the [AddressBase local custodian codes page ](/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/addressbase-local-custodian-codes.md)in the AddressBase Fundamentals section.


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