The department follows standards set by The National Archives (TNA). Both electronic and paper documents are created as part of its business. They are held for as long as required in line with set retention periods. When no longer required by the business they are then appraised for transfer to TNA as a significant historical record or destroyed. The destruction of documents is determined according to whether or not they are confidential. Confidential material will be destroyed using shredders or specialist disposal companies. The department's policies for managing its records, their retention, and disposal has remained constant.