The Financial Conduct Authority (FCA) has announced that it will introduce changes to the National Storage Mechanism (NSM) and Electronic Submission System (ESS), effective from 3 November 2025, in line with Policy Statement PS24/19: Enhancing the National Storage Mechanism. Key changes include updating the list of headline codes and categories used to organise regulated information, removing redundant categories and eliminating the ‘classification’ field. Issuers will also be required to record the name and legal entity identifier (LEI) of any related issuers that are the subject of a disclosure, as well as those of the organisation making the disclosure. The updated systems will provide clearer visibility of corrections to previously filed disclosures, with previous versions retained on the NSM but hidden from the default view. The FCA has further advised that file uploads to the NSM via the ESS will be unavailable from 1–2 November 2025, in preparation for the launch.