UK National Archives — Cass appendices
The UK Government Web Archive is the web archive of The National Archives, the United Kingdom’s national archive. It preserves snapshots of UK government websites, keeping documents findable after a site has been taken down.
What you can find
The website of the Cass Review is hosted in this archive: the original address, cass.independent-review.uk, automatically redirects to the archived version, which includes the final report, the interim report and the appendices.
Note
This is the archived website of the Cass Review itself, not a portal for the GIDS gender clinic, whose closure was announced in 2022. The link provided leads to the web archive’s homepage; if you are looking for the Cass documents, the quickest route is via the Cass Review’s original address. The archive may sometimes request human verification for automated access. See also archive.
How the web archive works
The National Archives began archiving government websites in 2003. Some archived sites date back to 1996. The archive now contains more than 6,000 websites and grows by around one hundred new snapshots each month. In addition to websites, it also preserves government channels on Twitter, YouTube and Flickr. You can search via an alphabetical list of sites and a search function that searches the full text. The content is available under the Open Government Licence v3.0, unless otherwise stated. The archive is accessible to everyone, and search engines are also allowed to crawl it. The National Archives describes it as a living archive that continues to grow, rather than a backup from which a website can be restored.
The Cass Review in the archive
The Cass Review’s old address redirects to a snapshot from 10 March 2025. The web address of such a snapshot includes the date and time when the page was captured. The final report was published on 10 April 2024, at the same time as the systematic reviews by the University of York. Those reviews have their own profile on this list: University of York.
How to use and assess this source
An archived page no longer changes. This makes the archive suitable for citation: use the full archive address, including the date. Anything that happened after the snapshot was taken is not included. Nor will you find external criticism there, such as the so-called Yale report opposing the Cass Review. For subsequent developments, such as decisions by NHS England, you will need other sources. An explanation of the underlying studies can be found under systematic reviews.