A not-new UK law was given regulatory effect this week and enables the British Library to archive the .uk web, just as it already receives legal deposit of UK print materials. The import of the new regulatory changes in effect April 6 is, I gather, that the archive can built by automated crawl, rather by permission for page-by-page grabs.
As the British Library explains, legal deposit of UK publications to identified libraries is, of course, a practice of long standing. The new regulations extend and entrench the program for UK digital materials:
. . . [more]
Legal deposit has existed in English law