HC Deb 09 July 1985 vol 82 c387W
Mr. Cohen

asked the Secretary of State for the Home Department what microfiche or other similar facility exists to record information entered on the police national computer but subsequently removed; and if he will make a statement as to the extent of this record.

Mr. Giles Shaw

The national identification bureau retains a microfiche record of every record which has been deleted from the criminal names file of the police national computer. The purpose of the microfiche, which contains only the original reference number of the deleted record, is to prove that a record has been deliberately destroyed and not lost or corrupted by the computer.