> 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/resources/site-resources.md).

# Site Resources

This section holds useful site information, including contact details, Terms and Conditions, the Open Identifiers Policy, and rules on the use of NSG and OS data.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3><i class="fa-mobile">:mobile:</i> Contact Us</h3></td><td>Signposting on how to contact OS if you have queries about our Download data products or feedback on any of the documentation. Instructions on how to leave feedback on individual pages on this site.</td><td><a href="/os-downloads/resources/site-resources/contact-us.md">Contact Us</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f4c3">📃</span> Terms and Conditions</h3></td><td>The terms and conditions on which the OS Premium data and OS OpenData Download products are made available.</td><td><a href="/os-downloads/resources/site-resources/terms-and-conditions.md">Terms and Conditions</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f4d4">📔</span> Open Identifiers Policy</h3></td><td>Information about and a link to our Open Identifiers Policy; this policy makes it easier for third parties to share information and link datasets.</td><td><a href="/os-downloads/resources/site-resources/open-identifiers-policy.md">Open Identifiers Policy</a></td></tr><tr><td><h3><i class="fa-file-pen">:file-pen:</i> Use of NSG and OS Data</h3></td><td>Briefing note on the use of the National Street Gazetteer (NSG) and OS data.</td><td><a href="/os-downloads/resources/site-resources/use-of-nsg-and-os-data.md">Use of NSG and OS Data</a></td></tr></tbody></table>


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