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The UK National Digital Archive of Datasets (NDAD) is operated by the University of London Computer Centre (ULCC) on behalf of The National Archives. Its aim is to conserve and, where possible, provide access to many computer datasets from central government departments and agencies, which have been selected for preservation by The National Archives. The data and its accompanying documentation can be browsed free of charge through the NDAD website.

NDAD is one of very few digital archives in the UK which not only preserve but also provide access to electronic records. It stores and catalogues its holdings according to archival practice, and makes them accessible to the public via this website. Paper documentation which accompanies the electronic records and provides a context for them is digitised and made available on the site too, both as a scanned image and as a plain text file.

Searching can easily locate items of interest and sophisticated queries can be run on the data itself. The catalogues of all of the datasets can be consulted online, and the data and documentation can be browsed free of charge.

If you need to do more with the data than is possible online, you may purchase a copy of a dataset on a variety of physical media and formats, as appropriate.