Revised and enhanced identification checking process from 28 May 2012 – On the 28 May, the Criminal Records Bureau (CRB) introduced new guidelines for identity (ID) checks, which apply to all CRB applications. The new guidelines have been introduced to strengthen the checking process, making it more difficult for applicants with previous criminal records to hide their convictions by changing their name. Both the new and current sets of guidelines will run simultaneously until 31 August 2012, when the current guidelines will no longer apply.

The full details of the changes are here.

http://www.homeoffice.gov.uk/agencies-public-bodies/crb/crb-press-releases/id-changes-docs/id-changes-guidance?view=Binary