The UK Web Archive (UKWA) is a partnership of all six UK Legal Deposit Libraries and aims to collect as much as possible of the UK web space at least once per year. Some of the collected websites are viewable through the UKWA website (www.webarchive.org.uk) from anywhere but the majority is only viewable in UK Legal Deposit Library reading rooms. The archive started selective archiving in 2005 and at large scale since 2013. The collection contains many hundreds of terabytes representing millions of websites.

UKWA often works with academic and other researchers on projects examining or utilising the web archive and these often result in data outputs that can be used publicly.