Availability of bibliographic records for the UK imprint

Various measures exist to determine the quality, however defined, of records in a database or catalogue but there has been less work in developing quality measures for catalogues or databases. UKOLN has carried out work on record quality and catalogue/database performance measurement since 1980. Recently UKOLN has extended its work on the currency of records in the BNB files on the British Library database to a number of other sources of bibliographic records. The results of the Multi‐Source Currency survey presented here have highlighted a number of issues relating to the bibliographic record coverage of the UK imprint.