The Legal Deposit UK Web Archive includes millions of websites obtained through our annual archiving of the entire UK domain. This was enabled by the non-print legal deposit regulations introduced by the government in April 2013.
The Open UK Web Archive is a smaller collection of selected websites archived by the British Library and its partners since 2003, with permissions from the owners. Selected websites will continue to be added to this open access collection, again with the permission of website owners.
The main difference between the Legal Deposit UK Web Archive and the Open UK Web Archive is in how they may be accessed. While both collections are searchable via Explore the British Library, the former may only be accessed on reading room computers on premises controlled by the Library. The latter is available online and may be accessed at any time and from anywhere in the world.
There may be archival copies of the same website in both collections.