§ Mr. Cope
[holding answer 2 July 1990]: No document falls due for selection and transfer to the Public Record Office until it is at least 30 years old. A document's suitability for permanent preservation under the terms of the Public Records Act 1958 will be reviewed during that period. The Act does not require statistics to be kept in the form requested and to do so would inevitably incur disproportionate cost. However, in order to comply with their duties under the Act, Departments are obliged to ensure that all documentary records are properly preserved with a view to possible transfer to the Public Record Office and eventual release to the public. The general criteria under which the Department may retain documents over 30 years old are set out in section 3(4) of the Public Records Act.