63.This section clarifies and extends a number of information disclosure provisions available to public authorities. The powers are listed in Schedule 4. It permits disclosure to assist any criminal investigation or criminal proceedings being carried out in the UK or abroad or to facilitate determinations of whether or not such investigations or proceedings should begin or end. The section does not limit any power to disclose that exists apart from this section. In determining whether they may disclose information, public authorities must ensure that their disclosure is proportionate to that which is intended by disclosing.