The National DNA Database (NDNAD) does not contain any information about criminal records, as this is not necessary for its function of matching DNA from crime scenes with DNA from individuals. Criminal record information is held on the Police National Computer (PNC). Data obtained from the PNC on 31 March 2008 indicate that there were 2,324,879 persons with a record on the PNC added by an English or Welsh force who had a conviction, caution, reprimand or final warning, but no record on NDNAD.